13431275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^2$

素因数の和:81

約数の個数: 54

約数和(自身を含む): 20899332

約数和(自身を除く): 7468057

約数列:

[1, 5, 11, 13, 17, 25, 55, 65, 85, 143, 169, 187, 221, 275, 289, 325, 425, 715, 845, 935, 1105, 1445, 1859, 2431, 2873, 3179, 3575, 3757, 4225, 4675, 5525, 7225, 9295, 12155, 14365, 15895, 18785, 31603, 41327, 46475, 48841, 60775, 71825, 79475, 93925, 158015, 206635, 244205, 537251, 790075, 1033175, 1221025, 2686255, 13431275]

約数ペア:

[(1, 13431275), (5, 2686255), (11, 1221025), (13, 1033175), (17, 790075), (25, 537251), (55, 244205), (65, 206635), (85, 158015), (143, 93925), (169, 79475), (187, 71825), (221, 60775), (275, 48841), (289, 46475), (325, 41327), (425, 31603), (715, 18785), (845, 15895), (935, 14365), (1105, 12155), (1445, 9295), (1859, 7225), (2431, 5525), (2873, 4675), (3179, 4225), (3575, 3757)]