64974940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{45757}}^1$

素因数の和:45837

約数の個数: 24

約数和(自身を含む): 138372192

約数和(自身を除く): 73397252

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 45757, 91514, 183028, 228785, 457570, 915140, 3248747, 6497494, 12994988, 16243735, 32487470, 64974940]

約数ペア:

[(1, 64974940), (2, 32487470), (4, 16243735), (5, 12994988), (10, 6497494), (20, 3248747), (71, 915140), (142, 457570), (284, 228785), (355, 183028), (710, 91514), (1420, 45757)]