20716800

素因数分解:

$2^8\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1$

素因数の和:125

約数の個数: 216

約数和(自身を含む): 74516064

約数和(自身を除く): 53799264

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 25, 26, 30, 32, 39, 40, 48, 50, 52, 60, 64, 65, 75, 78, 80, 83, 96, 100, 104, 120, 128, 130, 150, 156, 160, 166, 192, 195, 200, 208, 240, 249, 256, 260, 300, 312, 320, 325, 332, 384, 390, 400, 415, 416, 480, 498, 520, 600, 624, 640, 650, 664, 768, 780, 800, 830, 832, 960, 975, 996, 1040, 1079, 1200, 1245, 1248, 1280, 1300, 1328, 1560, 1600, 1660, 1664, 1920, 1950, 1992, 2075, 2080, 2158, 2400, 2490, 2496, 2600, 2656, 3120, 3200, 3237, 3320, 3328, 3840, 3900, 3984, 4150, 4160, 4316, 4800, 4980, 4992, 5200, 5312, 5395, 6225, 6240, 6400, 6474, 6640, 7800, 7968, 8300, 8320, 8632, 9600, 9960, 9984, 10400, 10624, 10790, 12450, 12480, 12948, 13280, 15600, 15936, 16185, 16600, 16640, 17264, 19200, 19920, 20800, 21248, 21580, 24900, 24960, 25896, 26560, 26975, 31200, 31872, 32370, 33200, 34528, 39840, 41600, 43160, 49800, 49920, 51792, 53120, 53950, 62400, 63744, 64740, 66400, 69056, 79680, 80925, 83200, 86320, 99600, 103584, 106240, 107900, 124800, 129480, 132800, 138112, 159360, 161850, 172640, 199200, 207168, 215800, 249600, 258960, 265600, 276224, 318720, 323700, 345280, 398400, 414336, 431600, 517920, 531200, 647400, 690560, 796800, 828672, 863200, 1035840, 1294800, 1381120, 1593600, 1726400, 2071680, 2589600, 3452800, 4143360, 5179200, 6905600, 10358400, 20716800]

約数ペア:

[(1, 20716800), (2, 10358400), (3, 6905600), (4, 5179200), (5, 4143360), (6, 3452800), (8, 2589600), (10, 2071680), (12, 1726400), (13, 1593600), (15, 1381120), (16, 1294800), (20, 1035840), (24, 863200), (25, 828672), (26, 796800), (30, 690560), (32, 647400), (39, 531200), (40, 517920), (48, 431600), (50, 414336), (52, 398400), (60, 345280), (64, 323700), (65, 318720), (75, 276224), (78, 265600), (80, 258960), (83, 249600), (96, 215800), (100, 207168), (104, 199200), (120, 172640), (128, 161850), (130, 159360), (150, 138112), (156, 132800), (160, 129480), (166, 124800), (192, 107900), (195, 106240), (200, 103584), (208, 99600), (240, 86320), (249, 83200), (256, 80925), (260, 79680), (300, 69056), (312, 66400), (320, 64740), (325, 63744), (332, 62400), (384, 53950), (390, 53120), (400, 51792), (415, 49920), (416, 49800), (480, 43160), (498, 41600), (520, 39840), (600, 34528), (624, 33200), (640, 32370), (650, 31872), (664, 31200), (768, 26975), (780, 26560), (800, 25896), (830, 24960), (832, 24900), (960, 21580), (975, 21248), (996, 20800), (1040, 19920), (1079, 19200), (1200, 17264), (1245, 16640), (1248, 16600), (1280, 16185), (1300, 15936), (1328, 15600), (1560, 13280), (1600, 12948), (1660, 12480), (1664, 12450), (1920, 10790), (1950, 10624), (1992, 10400), (2075, 9984), (2080, 9960), (2158, 9600), (2400, 8632), (2490, 8320), (2496, 8300), (2600, 7968), (2656, 7800), (3120, 6640), (3200, 6474), (3237, 6400), (3320, 6240), (3328, 6225), (3840, 5395), (3900, 5312), (3984, 5200), (4150, 4992), (4160, 4980), (4316, 4800)]