64436440

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{14779}}^1$

素因数の和:14899

約数の個数: 32

約数和(自身を含む): 146322000

約数和(自身を除く): 81885560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 14779, 29558, 59116, 73895, 118232, 147790, 295580, 591160, 1610911, 3221822, 6443644, 8054555, 12887288, 16109110, 32218220, 64436440]

約数ペア:

[(1, 64436440), (2, 32218220), (4, 16109110), (5, 12887288), (8, 8054555), (10, 6443644), (20, 3221822), (40, 1610911), (109, 591160), (218, 295580), (436, 147790), (545, 118232), (872, 73895), (1090, 59116), (2180, 29558), (4360, 14779)]