71561680

素因数分解:

$2^4\times 5^1\times {\mathrm{894521}}^1$

素因数の和:894534

約数の個数: 20

約数和(自身を含む): 166381092

約数和(自身を除く): 94819412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 894521, 1789042, 3578084, 4472605, 7156168, 8945210, 14312336, 17890420, 35780840, 71561680]

約数ペア:

[(1, 71561680), (2, 35780840), (4, 17890420), (5, 14312336), (8, 8945210), (10, 7156168), (16, 4472605), (20, 3578084), (40, 1789042), (80, 894521)]