81900720

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{383}}^1$

素因数の和:422

約数の個数: 240

約数和(自身を含む): 311980032

約数和(自身を除く): 230079312

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 48, 54, 55, 60, 66, 72, 80, 81, 88, 90, 99, 108, 110, 120, 132, 135, 144, 162, 165, 176, 180, 198, 216, 220, 240, 243, 264, 270, 297, 324, 330, 360, 383, 396, 405, 432, 440, 486, 495, 528, 540, 594, 648, 660, 720, 766, 792, 810, 880, 891, 972, 990, 1080, 1149, 1188, 1215, 1296, 1320, 1485, 1532, 1584, 1620, 1782, 1915, 1944, 1980, 2160, 2298, 2376, 2430, 2640, 2673, 2970, 3064, 3240, 3447, 3564, 3830, 3888, 3960, 4213, 4455, 4596, 4752, 4860, 5346, 5745, 5940, 6128, 6480, 6894, 7128, 7660, 7920, 8426, 8910, 9192, 9720, 10341, 10692, 11490, 11880, 12639, 13365, 13788, 14256, 15320, 16852, 17235, 17820, 18384, 19440, 20682, 21065, 21384, 22980, 23760, 25278, 26730, 27576, 30640, 31023, 33704, 34470, 35640, 37917, 41364, 42130, 42768, 45960, 50556, 51705, 53460, 55152, 62046, 63195, 67408, 68940, 71280, 75834, 82728, 84260, 91920, 93069, 101112, 103410, 106920, 113751, 124092, 126390, 137880, 151668, 155115, 165456, 168520, 186138, 189585, 202224, 206820, 213840, 227502, 248184, 252780, 275760, 303336, 310230, 337040, 341253, 372276, 379170, 413640, 455004, 465345, 496368, 505560, 568755, 606672, 620460, 682506, 744552, 758340, 827280, 910008, 930690, 1011120, 1023759, 1137510, 1240920, 1365012, 1489104, 1516680, 1706265, 1820016, 1861380, 2047518, 2275020, 2481840, 2730024, 3033360, 3412530, 3722760, 4095036, 4550040, 5118795, 5460048, 6825060, 7445520, 8190072, 9100080, 10237590, 13650120, 16380144, 20475180, 27300240, 40950360, 81900720]

約数ペア:

[(1, 81900720), (2, 40950360), (3, 27300240), (4, 20475180), (5, 16380144), (6, 13650120), (8, 10237590), (9, 9100080), (10, 8190072), (11, 7445520), (12, 6825060), (15, 5460048), (16, 5118795), (18, 4550040), (20, 4095036), (22, 3722760), (24, 3412530), (27, 3033360), (30, 2730024), (33, 2481840), (36, 2275020), (40, 2047518), (44, 1861380), (45, 1820016), (48, 1706265), (54, 1516680), (55, 1489104), (60, 1365012), (66, 1240920), (72, 1137510), (80, 1023759), (81, 1011120), (88, 930690), (90, 910008), (99, 827280), (108, 758340), (110, 744552), (120, 682506), (132, 620460), (135, 606672), (144, 568755), (162, 505560), (165, 496368), (176, 465345), (180, 455004), (198, 413640), (216, 379170), (220, 372276), (240, 341253), (243, 337040), (264, 310230), (270, 303336), (297, 275760), (324, 252780), (330, 248184), (360, 227502), (383, 213840), (396, 206820), (405, 202224), (432, 189585), (440, 186138), (486, 168520), (495, 165456), (528, 155115), (540, 151668), (594, 137880), (648, 126390), (660, 124092), (720, 113751), (766, 106920), (792, 103410), (810, 101112), (880, 93069), (891, 91920), (972, 84260), (990, 82728), (1080, 75834), (1149, 71280), (1188, 68940), (1215, 67408), (1296, 63195), (1320, 62046), (1485, 55152), (1532, 53460), (1584, 51705), (1620, 50556), (1782, 45960), (1915, 42768), (1944, 42130), (1980, 41364), (2160, 37917), (2298, 35640), (2376, 34470), (2430, 33704), (2640, 31023), (2673, 30640), (2970, 27576), (3064, 26730), (3240, 25278), (3447, 23760), (3564, 22980), (3830, 21384), (3888, 21065), (3960, 20682), (4213, 19440), (4455, 18384), (4596, 17820), (4752, 17235), (4860, 16852), (5346, 15320), (5745, 14256), (5940, 13788), (6128, 13365), (6480, 12639), (6894, 11880), (7128, 11490), (7660, 10692), (7920, 10341), (8426, 9720), (8910, 9192)]