204620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{787}}^1$

素因数の和:809

約数の個数: 24

約数和(自身を含む): 463344

約数和(自身を除く): 258724

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 787, 1574, 3148, 3935, 7870, 10231, 15740, 20462, 40924, 51155, 102310, 204620]

約数ペア:

[(1, 204620), (2, 102310), (4, 51155), (5, 40924), (10, 20462), (13, 15740), (20, 10231), (26, 7870), (52, 3935), (65, 3148), (130, 1574), (260, 787)]