21698913

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{6691}}^1$

素因数の和:6764

約数の個数: 16

約数和(自身を含む): 30836736

約数和(自身を除く): 9137823

約数列:

[1, 3, 23, 47, 69, 141, 1081, 3243, 6691, 20073, 153893, 314477, 461679, 943431, 7232971, 21698913]

約数ペア:

[(1, 21698913), (3, 7232971), (23, 943431), (47, 461679), (69, 314477), (141, 153893), (1081, 20073), (3243, 6691)]