12780432020

素因数分解:

$2^2\times 5^1\times {\mathrm{18911}}^1\times {\mathrm{33791}}^1$

素因数の和:52711

約数の個数: 24

約数和(自身を含む): 26841120768

約数和(自身を除く): 14060688748

約数列:

[1, 2, 4, 5, 10, 20, 18911, 33791, 37822, 67582, 75644, 94555, 135164, 168955, 189110, 337910, 378220, 675820, 639021601, 1278043202, 2556086404, 3195108005, 6390216010, 12780432020]

約数ペア:

[(1, 12780432020), (2, 6390216010), (4, 3195108005), (5, 2556086404), (10, 1278043202), (20, 639021601), (18911, 675820), (33791, 378220), (37822, 337910), (67582, 189110), (75644, 168955), (94555, 135164)]