31213806

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1$

素因数の和:305

約数の個数: 64

約数和(自身を含む): 71221248

約数和(自身を除く): 40007442

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 46, 69, 78, 127, 137, 138, 254, 274, 299, 381, 411, 598, 762, 822, 897, 1651, 1781, 1794, 2921, 3151, 3302, 3562, 4953, 5343, 5842, 6302, 8763, 9453, 9906, 10686, 17399, 17526, 18906, 34798, 37973, 40963, 52197, 75946, 81926, 104394, 113919, 122889, 226187, 227838, 245778, 400177, 452374, 678561, 800354, 1200531, 1357122, 2401062, 5202301, 10404602, 15606903, 31213806]

約数ペア:

[(1, 31213806), (2, 15606903), (3, 10404602), (6, 5202301), (13, 2401062), (23, 1357122), (26, 1200531), (39, 800354), (46, 678561), (69, 452374), (78, 400177), (127, 245778), (137, 227838), (138, 226187), (254, 122889), (274, 113919), (299, 104394), (381, 81926), (411, 75946), (598, 52197), (762, 40963), (822, 37973), (897, 34798), (1651, 18906), (1781, 17526), (1794, 17399), (2921, 10686), (3151, 9906), (3302, 9453), (3562, 8763), (4953, 6302), (5343, 5842)]