21235407

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{3617}}^1$

素因数の和:3742

約数の個数: 16

約数和(自身を含む): 30101760

約数和(自身を除く): 8866353

約数列:

[1, 3, 19, 57, 103, 309, 1957, 3617, 5871, 10851, 68723, 206169, 372551, 1117653, 7078469, 21235407]

約数ペア:

[(1, 21235407), (3, 7078469), (19, 1117653), (57, 372551), (103, 206169), (309, 68723), (1957, 10851), (3617, 5871)]