208530721

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{4243}}^1$

素因数の和:4333

約数の個数: 24

約数和(自身を含む): 261260640

約数和(自身を除く): 52729919

約数列:

[1, 7, 17, 49, 59, 119, 413, 833, 1003, 2891, 4243, 7021, 29701, 49147, 72131, 207907, 250337, 504917, 1752359, 3534419, 4255729, 12266513, 29790103, 208530721]

約数ペア:

[(1, 208530721), (7, 29790103), (17, 12266513), (49, 4255729), (59, 3534419), (119, 1752359), (413, 504917), (833, 250337), (1003, 207907), (2891, 72131), (4243, 49147), (7021, 29701)]