64430440

素因数分解:

$2^3\times 5^1\times {\mathrm{1610761}}^1$

素因数の和:1610772

約数の個数: 16

約数和(自身を含む): 144968580

約数和(自身を除く): 80538140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1610761, 3221522, 6443044, 8053805, 12886088, 16107610, 32215220, 64430440]

約数ペア:

[(1, 64430440), (2, 32215220), (4, 16107610), (5, 12886088), (8, 8053805), (10, 6443044), (20, 3221522), (40, 1610761)]