18163960

素因数分解:

$2^3\times 5^1\times {\mathrm{577}}^1\times {\mathrm{787}}^1$

素因数の和:1375

約数の個数: 32

約数和(自身を含む): 40991760

約数和(自身を除く): 22827800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 577, 787, 1154, 1574, 2308, 2885, 3148, 3935, 4616, 5770, 6296, 7870, 11540, 15740, 23080, 31480, 454099, 908198, 1816396, 2270495, 3632792, 4540990, 9081980, 18163960]

約数ペア:

[(1, 18163960), (2, 9081980), (4, 4540990), (5, 3632792), (8, 2270495), (10, 1816396), (20, 908198), (40, 454099), (577, 31480), (787, 23080), (1154, 15740), (1574, 11540), (2308, 7870), (2885, 6296), (3148, 5770), (3935, 4616)]