20819841

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{24181}}^1$

素因数の和:24232

約数の個数: 16

約数和(自身を含む): 32500608

約数和(自身を除く): 11680767

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 24181, 72543, 169267, 507801, 991421, 2974263, 6939947, 20819841]

約数ペア:

[(1, 20819841), (3, 6939947), (7, 2974263), (21, 991421), (41, 507801), (123, 169267), (287, 72543), (861, 24181)]