21913660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{307}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 47811456

約数和(自身を除く): 25897796

約数列:

[1, 2, 4, 5, 10, 20, 43, 83, 86, 166, 172, 215, 307, 332, 415, 430, 614, 830, 860, 1228, 1535, 1660, 3070, 3569, 6140, 7138, 13201, 14276, 17845, 25481, 26402, 35690, 50962, 52804, 66005, 71380, 101924, 127405, 132010, 254810, 264020, 509620, 1095683, 2191366, 4382732, 5478415, 10956830, 21913660]

約数ペア:

[(1, 21913660), (2, 10956830), (4, 5478415), (5, 4382732), (10, 2191366), (20, 1095683), (43, 509620), (83, 264020), (86, 254810), (166, 132010), (172, 127405), (215, 101924), (307, 71380), (332, 66005), (415, 52804), (430, 50962), (614, 35690), (830, 26402), (860, 25481), (1228, 17845), (1535, 14276), (1660, 13201), (3070, 7138), (3569, 6140)]