20857535991

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{26637977}}^1$

素因数の和:26638015

約数の個数: 16

約数和(自身を含む): 31965573600

約数和(自身を除く): 11108037609

約数列:

[1, 3, 9, 27, 29, 87, 261, 783, 26637977, 79913931, 239741793, 719225379, 772501333, 2317503999, 6952511997, 20857535991]

約数ペア:

[(1, 20857535991), (3, 6952511997), (9, 2317503999), (27, 772501333), (29, 719225379), (87, 239741793), (261, 79913931), (783, 26637977)]