640417228

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{359}}^1\times {\mathrm{40543}}^1$

素因数の和:40917

約数の個数: 24

約数和(自身を含む): 1226050560

約数和(自身を除く): 585633332

約数列:

[1, 2, 4, 11, 22, 44, 359, 718, 1436, 3949, 7898, 15796, 40543, 81086, 162172, 445973, 891946, 1783892, 14554937, 29109874, 58219748, 160104307, 320208614, 640417228]

約数ペア:

[(1, 640417228), (2, 320208614), (4, 160104307), (11, 58219748), (22, 29109874), (44, 14554937), (359, 1783892), (718, 891946), (1436, 445973), (3949, 162172), (7898, 81086), (15796, 40543)]