21306480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6829}}^1$

素因数の和:6858

約数の個数: 80

約数和(自身を含む): 71141280

約数和(自身を除く): 49834800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6829, 13658, 20487, 27316, 34145, 40974, 54632, 68290, 81948, 88777, 102435, 109264, 136580, 163896, 177554, 204870, 266331, 273160, 327792, 355108, 409740, 443885, 532662, 546320, 710216, 819480, 887770, 1065324, 1331655, 1420432, 1638960, 1775540, 2130648, 2663310, 3551080, 4261296, 5326620, 7102160, 10653240, 21306480]

約数ペア:

[(1, 21306480), (2, 10653240), (3, 7102160), (4, 5326620), (5, 4261296), (6, 3551080), (8, 2663310), (10, 2130648), (12, 1775540), (13, 1638960), (15, 1420432), (16, 1331655), (20, 1065324), (24, 887770), (26, 819480), (30, 710216), (39, 546320), (40, 532662), (48, 443885), (52, 409740), (60, 355108), (65, 327792), (78, 273160), (80, 266331), (104, 204870), (120, 177554), (130, 163896), (156, 136580), (195, 109264), (208, 102435), (240, 88777), (260, 81948), (312, 68290), (390, 54632), (520, 40974), (624, 34145), (780, 27316), (1040, 20487), (1560, 13658), (3120, 6829)]