129130520

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{31963}}^1$

素因数の和:32075

約数の個数: 32

約数和(自身を含む): 293429520

約数和(自身を除く): 164299000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 31963, 63926, 127852, 159815, 255704, 319630, 639260, 1278520, 3228263, 6456526, 12913052, 16141315, 25826104, 32282630, 64565260, 129130520]

約数ペア:

[(1, 129130520), (2, 64565260), (4, 32282630), (5, 25826104), (8, 16141315), (10, 12913052), (20, 6456526), (40, 3228263), (101, 1278520), (202, 639260), (404, 319630), (505, 255704), (808, 159815), (1010, 127852), (2020, 63926), (4040, 31963)]