21652696

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:404

約数の個数: 64

約数和(自身を含む): 47688480

約数和(自身を除く): 26035784

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 37, 52, 68, 74, 104, 136, 148, 221, 296, 331, 442, 481, 629, 662, 884, 962, 1258, 1324, 1768, 1924, 2516, 2648, 3848, 4303, 5032, 5627, 8177, 8606, 11254, 12247, 16354, 17212, 22508, 24494, 32708, 34424, 45016, 48988, 65416, 73151, 97976, 146302, 159211, 208199, 292604, 318422, 416398, 585208, 636844, 832796, 1273688, 1665592, 2706587, 5413174, 10826348, 21652696]

約数ペア:

[(1, 21652696), (2, 10826348), (4, 5413174), (8, 2706587), (13, 1665592), (17, 1273688), (26, 832796), (34, 636844), (37, 585208), (52, 416398), (68, 318422), (74, 292604), (104, 208199), (136, 159211), (148, 146302), (221, 97976), (296, 73151), (331, 65416), (442, 48988), (481, 45016), (629, 34424), (662, 32708), (884, 24494), (962, 22508), (1258, 17212), (1324, 16354), (1768, 12247), (1924, 11254), (2516, 8606), (2648, 8177), (3848, 5627), (4303, 5032)]