251797917

素因数分解:

$3^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{12503}}^1$

素因数の和:12657

約数の個数: 24

約数和(自身を含む): 393425856

約数和(自身を除く): 141627939

約数列:

[1, 3, 7, 21, 49, 137, 147, 411, 959, 2877, 6713, 12503, 20139, 37509, 87521, 262563, 612647, 1712911, 1837941, 5138733, 11990377, 35971131, 83932639, 251797917]

約数ペア:

[(1, 251797917), (3, 83932639), (7, 35971131), (21, 11990377), (49, 5138733), (137, 1837941), (147, 1712911), (411, 612647), (959, 262563), (2877, 87521), (6713, 37509), (12503, 20139)]