64903120

素因数分解:

$2^4\times 5^1\times {\mathrm{811289}}^1$

素因数の和:811302

約数の個数: 20

約数和(自身を含む): 150899940

約数和(自身を除く): 85996820

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 811289, 1622578, 3245156, 4056445, 6490312, 8112890, 12980624, 16225780, 32451560, 64903120]

約数ペア:

[(1, 64903120), (2, 32451560), (4, 16225780), (5, 12980624), (8, 8112890), (10, 6490312), (16, 4056445), (20, 3245156), (40, 1622578), (80, 811289)]