1280490718

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{271}}^1\times {\mathrm{691}}^1$

素因数の和:1240

約数の個数: 32

約数和(自身を含む): 2087027712

約数和(自身を除く): 806536994

約数列:

[1, 2, 13, 26, 263, 271, 526, 542, 691, 1382, 3419, 3523, 6838, 7046, 8983, 17966, 71273, 142546, 181733, 187261, 363466, 374522, 926549, 1853098, 2362529, 2434393, 4725058, 4868786, 49249643, 98499286, 640245359, 1280490718]

約数ペア:

[(1, 1280490718), (2, 640245359), (13, 98499286), (26, 49249643), (263, 4868786), (271, 4725058), (526, 2434393), (542, 2362529), (691, 1853098), (1382, 926549), (3419, 374522), (3523, 363466), (6838, 187261), (7046, 181733), (8983, 142546), (17966, 71273)]