20994705

素因数分解:

$3^2\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1231}}^1$

素因数の和:1621

約数の個数: 24

約数和(自身を含む): 36516480

約数和(自身を除く): 15521775

約数列:

[1, 3, 5, 9, 15, 45, 379, 1137, 1231, 1895, 3411, 3693, 5685, 6155, 11079, 17055, 18465, 55395, 466549, 1399647, 2332745, 4198941, 6998235, 20994705]

約数ペア:

[(1, 20994705), (3, 6998235), (5, 4198941), (9, 2332745), (15, 1399647), (45, 466549), (379, 55395), (1137, 18465), (1231, 17055), (1895, 11079), (3411, 6155), (3693, 5685)]