12990760

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4111}}^1$

素因数の和:4201

約数の個数: 32

約数和(自身を含む): 29606400

約数和(自身を除く): 16615640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 4111, 8222, 16444, 20555, 32888, 41110, 82220, 164440, 324769, 649538, 1299076, 1623845, 2598152, 3247690, 6495380, 12990760]

約数ペア:

[(1, 12990760), (2, 6495380), (4, 3247690), (5, 2598152), (8, 1623845), (10, 1299076), (20, 649538), (40, 324769), (79, 164440), (158, 82220), (316, 41110), (395, 32888), (632, 20555), (790, 16444), (1580, 8222), (3160, 4111)]