21243846

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{433}}^1$

素因数の和:505

約数の個数: 64

約数和(自身を含む): 49871808

約数和(自身を除く): 28627962

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 37, 39, 51, 74, 78, 102, 111, 221, 222, 433, 442, 481, 629, 663, 866, 962, 1258, 1299, 1326, 1443, 1887, 2598, 2886, 3774, 5629, 7361, 8177, 11258, 14722, 16021, 16354, 16887, 22083, 24531, 32042, 33774, 44166, 48063, 49062, 95693, 96126, 191386, 208273, 272357, 287079, 416546, 544714, 574158, 624819, 817071, 1249638, 1634142, 3540641, 7081282, 10621923, 21243846]

約数ペア:

[(1, 21243846), (2, 10621923), (3, 7081282), (6, 3540641), (13, 1634142), (17, 1249638), (26, 817071), (34, 624819), (37, 574158), (39, 544714), (51, 416546), (74, 287079), (78, 272357), (102, 208273), (111, 191386), (221, 96126), (222, 95693), (433, 49062), (442, 48063), (481, 44166), (629, 33774), (663, 32042), (866, 24531), (962, 22083), (1258, 16887), (1299, 16354), (1326, 16021), (1443, 14722), (1887, 11258), (2598, 8177), (2886, 7361), (3774, 5629)]