20551233

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{1613}}^1$

素因数の和:1784

約数の個数: 16

約数和(自身を含む): 28509696

約数和(自身を除く): 7958463

約数列:

[1, 3, 31, 93, 137, 411, 1613, 4247, 4839, 12741, 50003, 150009, 220981, 662943, 6850411, 20551233]

約数ペア:

[(1, 20551233), (3, 6850411), (31, 662943), (93, 220981), (137, 150009), (411, 50003), (1613, 12741), (4247, 4839)]