28640540

素因数分解:

$2^2\times 5^1\times {\mathrm{541}}^1\times {\mathrm{2647}}^1$

素因数の和:3197

約数の個数: 24

約数和(自身を含む): 60279072

約数和(自身を除く): 31638532

約数列:

[1, 2, 4, 5, 10, 20, 541, 1082, 2164, 2647, 2705, 5294, 5410, 10588, 10820, 13235, 26470, 52940, 1432027, 2864054, 5728108, 7160135, 14320270, 28640540]

約数ペア:

[(1, 28640540), (2, 14320270), (4, 7160135), (5, 5728108), (10, 2864054), (20, 1432027), (541, 52940), (1082, 26470), (2164, 13235), (2647, 10820), (2705, 10588), (5294, 5410)]