64893680

素因数分解:

$2^4\times 5^1\times {\mathrm{811171}}^1$

素因数の和:811184

約数の個数: 20

約数和(自身を含む): 150877992

約数和(自身を除く): 85984312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 811171, 1622342, 3244684, 4055855, 6489368, 8111710, 12978736, 16223420, 32446840, 64893680]

約数ペア:

[(1, 64893680), (2, 32446840), (4, 16223420), (5, 12978736), (8, 8111710), (10, 6489368), (16, 4055855), (20, 3244684), (40, 1622342), (80, 811171)]