21620817

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{19531}}^1$

素因数の和:19581

約数の個数: 16

約数和(自身を含む): 32813760

約数和(自身を除く): 11192943

約数列:

[1, 3, 9, 27, 41, 123, 369, 1107, 19531, 58593, 175779, 527337, 800771, 2402313, 7206939, 21620817]

約数ペア:

[(1, 21620817), (3, 7206939), (9, 2402313), (27, 800771), (41, 527337), (123, 175779), (369, 58593), (1107, 19531)]