21204240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{1667}}^1$

素因数の和:1736

約数の個数: 80

約数和(自身を含む): 67013568

約数和(自身を除く): 45809328

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 53, 60, 80, 106, 120, 159, 212, 240, 265, 318, 424, 530, 636, 795, 848, 1060, 1272, 1590, 1667, 2120, 2544, 3180, 3334, 4240, 5001, 6360, 6668, 8335, 10002, 12720, 13336, 16670, 20004, 25005, 26672, 33340, 40008, 50010, 66680, 80016, 88351, 100020, 133360, 176702, 200040, 265053, 353404, 400080, 441755, 530106, 706808, 883510, 1060212, 1325265, 1413616, 1767020, 2120424, 2650530, 3534040, 4240848, 5301060, 7068080, 10602120, 21204240]

約数ペア:

[(1, 21204240), (2, 10602120), (3, 7068080), (4, 5301060), (5, 4240848), (6, 3534040), (8, 2650530), (10, 2120424), (12, 1767020), (15, 1413616), (16, 1325265), (20, 1060212), (24, 883510), (30, 706808), (40, 530106), (48, 441755), (53, 400080), (60, 353404), (80, 265053), (106, 200040), (120, 176702), (159, 133360), (212, 100020), (240, 88351), (265, 80016), (318, 66680), (424, 50010), (530, 40008), (636, 33340), (795, 26672), (848, 25005), (1060, 20004), (1272, 16670), (1590, 13336), (1667, 12720), (2120, 10002), (2544, 8335), (3180, 6668), (3334, 6360), (4240, 5001)]