21290045

素因数分解:

$5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{6271}}^1$

素因数の和:6380

約数の個数: 16

約数和(自身を含む): 29503488

約数和(自身を除く): 8213443

約数列:

[1, 5, 7, 35, 97, 485, 679, 3395, 6271, 31355, 43897, 219485, 608287, 3041435, 4258009, 21290045]

約数ペア:

[(1, 21290045), (5, 4258009), (7, 3041435), (35, 608287), (97, 219485), (485, 43897), (679, 31355), (3395, 6271)]