21915720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3581}}^1$

素因数の和:3615

約数の個数: 96

約数和(自身を含む): 75436920

約数和(自身を除く): 53521200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 30, 34, 36, 40, 45, 51, 60, 68, 72, 85, 90, 102, 120, 136, 153, 170, 180, 204, 255, 306, 340, 360, 408, 510, 612, 680, 765, 1020, 1224, 1530, 2040, 3060, 3581, 6120, 7162, 10743, 14324, 17905, 21486, 28648, 32229, 35810, 42972, 53715, 60877, 64458, 71620, 85944, 107430, 121754, 128916, 143240, 161145, 182631, 214860, 243508, 257832, 304385, 322290, 365262, 429720, 487016, 547893, 608770, 644580, 730524, 913155, 1095786, 1217540, 1289160, 1461048, 1826310, 2191572, 2435080, 2739465, 3652620, 4383144, 5478930, 7305240, 10957860, 21915720]

約数ペア:

[(1, 21915720), (2, 10957860), (3, 7305240), (4, 5478930), (5, 4383144), (6, 3652620), (8, 2739465), (9, 2435080), (10, 2191572), (12, 1826310), (15, 1461048), (17, 1289160), (18, 1217540), (20, 1095786), (24, 913155), (30, 730524), (34, 644580), (36, 608770), (40, 547893), (45, 487016), (51, 429720), (60, 365262), (68, 322290), (72, 304385), (85, 257832), (90, 243508), (102, 214860), (120, 182631), (136, 161145), (153, 143240), (170, 128916), (180, 121754), (204, 107430), (255, 85944), (306, 71620), (340, 64458), (360, 60877), (408, 53715), (510, 42972), (612, 35810), (680, 32229), (765, 28648), (1020, 21486), (1224, 17905), (1530, 14324), (2040, 10743), (3060, 7162), (3581, 6120)]