171900440

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{70451}}^1$

素因数の和:70523

約数の個数: 32

約数和(自身を含む): 393122160

約数和(自身を除く): 221221720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 70451, 140902, 281804, 352255, 563608, 704510, 1409020, 2818040, 4297511, 8595022, 17190044, 21487555, 34380088, 42975110, 85950220, 171900440]

約数ペア:

[(1, 171900440), (2, 85950220), (4, 42975110), (5, 34380088), (8, 21487555), (10, 17190044), (20, 8595022), (40, 4297511), (61, 2818040), (122, 1409020), (244, 704510), (305, 563608), (488, 352255), (610, 281804), (1220, 140902), (2440, 70451)]