8171980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4591}}^1$

素因数の和:4689

約数の個数: 24

約数和(自身を含む): 17357760

約数和(自身を除く): 9185780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 4591, 9182, 18364, 22955, 45910, 91820, 408599, 817198, 1634396, 2042995, 4085990, 8171980]

約数ペア:

[(1, 8171980), (2, 4085990), (4, 2042995), (5, 1634396), (10, 817198), (20, 408599), (89, 91820), (178, 45910), (356, 22955), (445, 18364), (890, 9182), (1780, 4591)]