1280331

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:403

約数の個数: 24

約数和(自身を含む): 2061696

約数和(自身を除く): 781365

約数列:

[1, 3, 9, 13, 31, 39, 93, 117, 279, 353, 403, 1059, 1209, 3177, 3627, 4589, 10943, 13767, 32829, 41301, 98487, 142259, 426777, 1280331]

約数ペア:

[(1, 1280331), (3, 426777), (9, 142259), (13, 98487), (31, 41301), (39, 32829), (93, 13767), (117, 10943), (279, 4589), (353, 3627), (403, 3177), (1059, 1209)]