66987640

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{20177}}^1$

素因数の和:20271

約数の個数: 32

約数和(自身を含む): 152545680

約数和(自身を除く): 85558040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 20177, 40354, 80708, 100885, 161416, 201770, 403540, 807080, 1674691, 3349382, 6698764, 8373455, 13397528, 16746910, 33493820, 66987640]

約数ペア:

[(1, 66987640), (2, 33493820), (4, 16746910), (5, 13397528), (8, 8373455), (10, 6698764), (20, 3349382), (40, 1674691), (83, 807080), (166, 403540), (332, 201770), (415, 161416), (664, 100885), (830, 80708), (1660, 40354), (3320, 20177)]