64490420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{52861}}^1$

素因数の和:52931

約数の個数: 24

約数和(自身を含む): 137652648

約数和(自身を除く): 73162228

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 52861, 105722, 211444, 264305, 528610, 1057220, 3224521, 6449042, 12898084, 16122605, 32245210, 64490420]

約数ペア:

[(1, 64490420), (2, 32245210), (4, 16122605), (5, 12898084), (10, 6449042), (20, 3224521), (61, 1057220), (122, 528610), (244, 264305), (305, 211444), (610, 105722), (1220, 52861)]