209800520

素因数分解:

$2^3\times 5^1\times {\mathrm{5245013}}^1$

素因数の和:5245024

約数の個数: 16

約数和(自身を含む): 472051260

約数和(自身を除く): 262250740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5245013, 10490026, 20980052, 26225065, 41960104, 52450130, 104900260, 209800520]

約数ペア:

[(1, 209800520), (2, 104900260), (4, 52450130), (5, 41960104), (8, 26225065), (10, 20980052), (20, 10490026), (40, 5245013)]