20400328

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 42163200

約数和(自身を除く): 21762872

約数列:

[1, 2, 4, 8, 13, 26, 52, 79, 104, 158, 169, 191, 316, 338, 382, 632, 676, 764, 1027, 1352, 1528, 2054, 2483, 4108, 4966, 8216, 9932, 13351, 15089, 19864, 26702, 30178, 32279, 53404, 60356, 64558, 106808, 120712, 129116, 196157, 258232, 392314, 784628, 1569256, 2550041, 5100082, 10200164, 20400328]

約数ペア:

[(1, 20400328), (2, 10200164), (4, 5100082), (8, 2550041), (13, 1569256), (26, 784628), (52, 392314), (79, 258232), (104, 196157), (158, 129116), (169, 120712), (191, 106808), (316, 64558), (338, 60356), (382, 53404), (632, 32279), (676, 30178), (764, 26702), (1027, 19864), (1352, 15089), (1528, 13351), (2054, 9932), (2483, 8216), (4108, 4966)]