64953520

素因数分解:

$2^4\times 5^1\times {\mathrm{811919}}^1$

素因数の和:811932

約数の個数: 20

約数和(自身を含む): 151017120

約数和(自身を除く): 86063600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 811919, 1623838, 3247676, 4059595, 6495352, 8119190, 12990704, 16238380, 32476760, 64953520]

約数ペア:

[(1, 64953520), (2, 32476760), (4, 16238380), (5, 12990704), (8, 8119190), (10, 6495352), (16, 4059595), (20, 3247676), (40, 1623838), (80, 811919)]