42639320

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1663}}^1$

素因数の和:2315

約数の個数: 32

約数和(自身を含む): 96145920

約数和(自身を除く): 53506600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 1663, 2564, 3205, 3326, 5128, 6410, 6652, 8315, 12820, 13304, 16630, 25640, 33260, 66520, 1065983, 2131966, 4263932, 5329915, 8527864, 10659830, 21319660, 42639320]

約数ペア:

[(1, 42639320), (2, 21319660), (4, 10659830), (5, 8527864), (8, 5329915), (10, 4263932), (20, 2131966), (40, 1065983), (641, 66520), (1282, 33260), (1663, 25640), (2564, 16630), (3205, 13304), (3326, 12820), (5128, 8315), (6410, 6652)]