30990771

素因数分解:

$3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{4513}}^1$

素因数の和:4635

約数の個数: 24

約数和(自身を含む): 51640160

約数和(自身を除く): 20649389

約数列:

[1, 3, 7, 9, 21, 63, 109, 327, 763, 981, 2289, 4513, 6867, 13539, 31591, 40617, 94773, 284319, 491917, 1475751, 3443419, 4427253, 10330257, 30990771]

約数ペア:

[(1, 30990771), (3, 10330257), (7, 4427253), (9, 3443419), (21, 1475751), (63, 491917), (109, 284319), (327, 94773), (763, 40617), (981, 31591), (2289, 13539), (4513, 6867)]