1640278857

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2111041}}^1$

素因数の和:2111088

約数の個数: 16

約数和(自身を含む): 2567027072

約数和(自身を除く): 926748215

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 2111041, 6333123, 14777287, 44331861, 78108517, 234325551, 546759619, 1640278857]

約数ペア:

[(1, 1640278857), (3, 546759619), (7, 234325551), (21, 78108517), (37, 44331861), (111, 14777287), (259, 6333123), (777, 2111041)]