21170331

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25849}}^1$

素因数の和:25875

約数の個数: 24

約数和(自身を含む): 37637600

約数和(自身を除く): 16467269

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 25849, 77547, 180943, 232641, 336037, 542829, 1008111, 1628487, 2352259, 3024333, 7056777, 21170331]

約数ペア:

[(1, 21170331), (3, 7056777), (7, 3024333), (9, 2352259), (13, 1628487), (21, 1008111), (39, 542829), (63, 336037), (91, 232641), (117, 180943), (273, 77547), (819, 25849)]