18219380

素因数分解:

$2^2\times 5^1\times {\mathrm{569}}^1\times {\mathrm{1601}}^1$

素因数の和:2179

約数の個数: 24

約数和(自身を含む): 38351880

約数和(自身を除く): 20132500

約数列:

[1, 2, 4, 5, 10, 20, 569, 1138, 1601, 2276, 2845, 3202, 5690, 6404, 8005, 11380, 16010, 32020, 910969, 1821938, 3643876, 4554845, 9109690, 18219380]

約数ペア:

[(1, 18219380), (2, 9109690), (4, 4554845), (5, 3643876), (10, 1821938), (20, 910969), (569, 32020), (1138, 16010), (1601, 11380), (2276, 8005), (2845, 6404), (3202, 5690)]