129691880

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{5821}}^1$

素因数の和:6389

約数の個数: 32

約数和(自身を含む): 292380840

約数和(自身を除く): 162688960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 1114, 2228, 2785, 4456, 5570, 5821, 11140, 11642, 22280, 23284, 29105, 46568, 58210, 116420, 232840, 3242297, 6484594, 12969188, 16211485, 25938376, 32422970, 64845940, 129691880]

約数ペア:

[(1, 129691880), (2, 64845940), (4, 32422970), (5, 25938376), (8, 16211485), (10, 12969188), (20, 6484594), (40, 3242297), (557, 232840), (1114, 116420), (2228, 58210), (2785, 46568), (4456, 29105), (5570, 23284), (5821, 22280), (11140, 11642)]