21337659

素因数分解:

$3^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{2243}}^1$

素因数の和:2407

約数の個数: 24

約数和(自身を含む): 35473152

約数和(自身を除く): 14135493

約数列:

[1, 3, 7, 9, 21, 63, 151, 453, 1057, 1359, 2243, 3171, 6729, 9513, 15701, 20187, 47103, 141309, 338693, 1016079, 2370851, 3048237, 7112553, 21337659]

約数ペア:

[(1, 21337659), (3, 7112553), (7, 3048237), (9, 2370851), (21, 1016079), (63, 338693), (151, 141309), (453, 47103), (1057, 20187), (1359, 15701), (2243, 9513), (3171, 6729)]