21000984020

素因数分解:

$2^2\times 5^1\times {\mathrm{337}}^1\times {\mathrm{3115873}}^1$

素因数の和:3116219

約数の個数: 24

約数和(自身を含む): 44232947304

約数和(自身を除く): 23231963284

約数列:

[1, 2, 4, 5, 10, 20, 337, 674, 1348, 1685, 3370, 6740, 3115873, 6231746, 12463492, 15579365, 31158730, 62317460, 1050049201, 2100098402, 4200196804, 5250246005, 10500492010, 21000984020]

約数ペア:

[(1, 21000984020), (2, 10500492010), (4, 5250246005), (5, 4200196804), (10, 2100098402), (20, 1050049201), (337, 62317460), (674, 31158730), (1348, 15579365), (1685, 12463492), (3370, 6231746), (6740, 3115873)]