12521680

素因数分解:

$2^4\times 5^1\times {\mathrm{156521}}^1$

素因数の和:156534

約数の個数: 20

約数和(自身を含む): 29113092

約数和(自身を除く): 16591412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 156521, 313042, 626084, 782605, 1252168, 1565210, 2504336, 3130420, 6260840, 12521680]

約数ペア:

[(1, 12521680), (2, 6260840), (4, 3130420), (5, 2504336), (8, 1565210), (10, 1252168), (16, 782605), (20, 626084), (40, 313042), (80, 156521)]