397017968

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{347}}^1\times {\mathrm{1663}}^1$

素因数の和:2061

約数の個数: 40

約数和(自身を含む): 789854208

約数和(自身を除く): 392836240

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 347, 688, 694, 1388, 1663, 2776, 3326, 5552, 6652, 13304, 14921, 26608, 29842, 59684, 71509, 119368, 143018, 238736, 286036, 572072, 577061, 1144144, 1154122, 2308244, 4616488, 9232976, 24813623, 49627246, 99254492, 198508984, 397017968]

約数ペア:

[(1, 397017968), (2, 198508984), (4, 99254492), (8, 49627246), (16, 24813623), (43, 9232976), (86, 4616488), (172, 2308244), (344, 1154122), (347, 1144144), (688, 577061), (694, 572072), (1388, 286036), (1663, 238736), (2776, 143018), (3326, 119368), (5552, 71509), (6652, 59684), (13304, 29842), (14921, 26608)]