129205880

素因数分解:

$2^3\times 5^1\times {\mathrm{571}}^1\times {\mathrm{5657}}^1$

素因数の和:6239

約数の個数: 32

約数和(自身を含む): 291273840

約数和(自身を除く): 162067960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 571, 1142, 2284, 2855, 4568, 5657, 5710, 11314, 11420, 22628, 22840, 28285, 45256, 56570, 113140, 226280, 3230147, 6460294, 12920588, 16150735, 25841176, 32301470, 64602940, 129205880]

約数ペア:

[(1, 129205880), (2, 64602940), (4, 32301470), (5, 25841176), (8, 16150735), (10, 12920588), (20, 6460294), (40, 3230147), (571, 226280), (1142, 113140), (2284, 56570), (2855, 45256), (4568, 28285), (5657, 22840), (5710, 22628), (11314, 11420)]