8125520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{601}}^1$

素因数の和:640

約数の個数: 60

約数和(自身を含む): 20490876

約数和(自身を除く): 12365356

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 601, 676, 845, 1040, 1202, 1352, 1690, 2404, 2704, 3005, 3380, 4808, 6010, 6760, 7813, 9616, 12020, 13520, 15626, 24040, 31252, 39065, 48080, 62504, 78130, 101569, 125008, 156260, 203138, 312520, 406276, 507845, 625040, 812552, 1015690, 1625104, 2031380, 4062760, 8125520]

約数ペア:

[(1, 8125520), (2, 4062760), (4, 2031380), (5, 1625104), (8, 1015690), (10, 812552), (13, 625040), (16, 507845), (20, 406276), (26, 312520), (40, 203138), (52, 156260), (65, 125008), (80, 101569), (104, 78130), (130, 62504), (169, 48080), (208, 39065), (260, 31252), (338, 24040), (520, 15626), (601, 13520), (676, 12020), (845, 9616), (1040, 7813), (1202, 6760), (1352, 6010), (1690, 4808), (2404, 3380), (2704, 3005)]