312855640

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{56269}}^1$

素因数の和:56419

約数の個数: 32

約数和(自身を含む): 709002000

約数和(自身を除く): 396146360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 56269, 112538, 225076, 281345, 450152, 562690, 1125380, 2250760, 7821391, 15642782, 31285564, 39106955, 62571128, 78213910, 156427820, 312855640]

約数ペア:

[(1, 312855640), (2, 156427820), (4, 78213910), (5, 62571128), (8, 39106955), (10, 31285564), (20, 15642782), (40, 7821391), (139, 2250760), (278, 1125380), (556, 562690), (695, 450152), (1112, 281345), (1390, 225076), (2780, 112538), (5560, 56269)]