157210420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{128861}}^1$

素因数の和:128931

約数の個数: 24

約数和(自身を含む): 335556648

約数和(自身を除く): 178346228

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 128861, 257722, 515444, 644305, 1288610, 2577220, 7860521, 15721042, 31442084, 39302605, 78605210, 157210420]

約数ペア:

[(1, 157210420), (2, 78605210), (4, 39302605), (5, 31442084), (10, 15721042), (20, 7860521), (61, 2577220), (122, 1288610), (244, 644305), (305, 515444), (610, 257722), (1220, 128861)]