20429950

素因数分解:

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

素因数の和:4692

約数の個数: 24

約数和(自身を含む): 38435040

約数和(自身を除く): 18005090

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 890, 2225, 4450, 4591, 9182, 22955, 45910, 114775, 229550, 408599, 817198, 2042995, 4085990, 10214975, 20429950]

約数ペア:

[(1, 20429950), (2, 10214975), (5, 4085990), (10, 2042995), (25, 817198), (50, 408599), (89, 229550), (178, 114775), (445, 45910), (890, 22955), (2225, 9182), (4450, 4591)]