345788780

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{21059}}^1$

素因数の和:21889

約数の個数: 24

約数和(自身を含む): 727075440

約数和(自身を除く): 381286660

約数列:

[1, 2, 4, 5, 10, 20, 821, 1642, 3284, 4105, 8210, 16420, 21059, 42118, 84236, 105295, 210590, 421180, 17289439, 34578878, 69157756, 86447195, 172894390, 345788780]

約数ペア:

[(1, 345788780), (2, 172894390), (4, 86447195), (5, 69157756), (10, 34578878), (20, 17289439), (821, 421180), (1642, 210590), (3284, 105295), (4105, 84236), (8210, 42118), (16420, 21059)]