21000921600

素因数分解:

$2^9\times 3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{13339}}^1$

素因数の和:13411

約数の個数: 240

約数和(自身を含む): 71072638560

約数和(自身を除く): 50071716960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 41, 48, 50, 60, 64, 75, 80, 82, 96, 100, 120, 123, 128, 150, 160, 164, 192, 200, 205, 240, 246, 256, 300, 320, 328, 384, 400, 410, 480, 492, 512, 600, 615, 640, 656, 768, 800, 820, 960, 984, 1025, 1200, 1230, 1280, 1312, 1536, 1600, 1640, 1920, 1968, 2050, 2400, 2460, 2560, 2624, 3075, 3200, 3280, 3840, 3936, 4100, 4800, 4920, 5248, 6150, 6400, 6560, 7680, 7872, 8200, 9600, 9840, 10496, 12300, 12800, 13120, 13339, 15744, 16400, 19200, 19680, 20992, 24600, 26240, 26678, 31488, 32800, 38400, 39360, 40017, 49200, 52480, 53356, 62976, 65600, 66695, 78720, 80034, 98400, 104960, 106712, 131200, 133390, 157440, 160068, 196800, 200085, 213424, 262400, 266780, 314880, 320136, 333475, 393600, 400170, 426848, 524800, 533560, 546899, 640272, 666950, 787200, 800340, 853696, 1000425, 1067120, 1093798, 1280544, 1333900, 1574400, 1600680, 1640697, 1707392, 2000850, 2134240, 2187596, 2561088, 2667800, 2734495, 3201360, 3281394, 3414784, 4001700, 4268480, 4375192, 5122176, 5335600, 5468990, 6402720, 6562788, 6829568, 8003400, 8203485, 8536960, 8750384, 10244352, 10671200, 10937980, 12805440, 13125576, 13672475, 16006800, 16406970, 17073920, 17500768, 20488704, 21342400, 21875960, 25610880, 26251152, 27344950, 32013600, 32813940, 34147840, 35001536, 41017425, 42684800, 43751920, 51221760, 52502304, 54689900, 64027200, 65627880, 70003072, 82034850, 85369600, 87503840, 102443520, 105004608, 109379800, 128054400, 131255760, 140006144, 164069700, 170739200, 175007680, 210009216, 218759600, 256108800, 262511520, 280012288, 328139400, 350015360, 420018432, 437519200, 512217600, 525023040, 656278800, 700030720, 840036864, 875038400, 1050046080, 1312557600, 1400061440, 1750076800, 2100092160, 2625115200, 3500153600, 4200184320, 5250230400, 7000307200, 10500460800, 21000921600]

約数ペア:

[(1, 21000921600), (2, 10500460800), (3, 7000307200), (4, 5250230400), (5, 4200184320), (6, 3500153600), (8, 2625115200), (10, 2100092160), (12, 1750076800), (15, 1400061440), (16, 1312557600), (20, 1050046080), (24, 875038400), (25, 840036864), (30, 700030720), (32, 656278800), (40, 525023040), (41, 512217600), (48, 437519200), (50, 420018432), (60, 350015360), (64, 328139400), (75, 280012288), (80, 262511520), (82, 256108800), (96, 218759600), (100, 210009216), (120, 175007680), (123, 170739200), (128, 164069700), (150, 140006144), (160, 131255760), (164, 128054400), (192, 109379800), (200, 105004608), (205, 102443520), (240, 87503840), (246, 85369600), (256, 82034850), (300, 70003072), (320, 65627880), (328, 64027200), (384, 54689900), (400, 52502304), (410, 51221760), (480, 43751920), (492, 42684800), (512, 41017425), (600, 35001536), (615, 34147840), (640, 32813940), (656, 32013600), (768, 27344950), (800, 26251152), (820, 25610880), (960, 21875960), (984, 21342400), (1025, 20488704), (1200, 17500768), (1230, 17073920), (1280, 16406970), (1312, 16006800), (1536, 13672475), (1600, 13125576), (1640, 12805440), (1920, 10937980), (1968, 10671200), (2050, 10244352), (2400, 8750384), (2460, 8536960), (2560, 8203485), (2624, 8003400), (3075, 6829568), (3200, 6562788), (3280, 6402720), (3840, 5468990), (3936, 5335600), (4100, 5122176), (4800, 4375192), (4920, 4268480), (5248, 4001700), (6150, 3414784), (6400, 3281394), (6560, 3201360), (7680, 2734495), (7872, 2667800), (8200, 2561088), (9600, 2187596), (9840, 2134240), (10496, 2000850), (12300, 1707392), (12800, 1640697), (13120, 1600680), (13339, 1574400), (15744, 1333900), (16400, 1280544), (19200, 1093798), (19680, 1067120), (20992, 1000425), (24600, 853696), (26240, 800340), (26678, 787200), (31488, 666950), (32800, 640272), (38400, 546899), (39360, 533560), (40017, 524800), (49200, 426848), (52480, 400170), (53356, 393600), (62976, 333475), (65600, 320136), (66695, 314880), (78720, 266780), (80034, 262400), (98400, 213424), (104960, 200085), (106712, 196800), (131200, 160068), (133390, 157440)]