20395991

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{7159}}^1$

素因数の和:7214

約数の個数: 16

約数和(自身を含む): 26119680

約数和(自身を除く): 5723689

約数列:

[1, 7, 11, 37, 77, 259, 407, 2849, 7159, 50113, 78749, 264883, 551243, 1854181, 2913713, 20395991]

約数ペア:

[(1, 20395991), (7, 2913713), (11, 1854181), (37, 551243), (77, 264883), (259, 78749), (407, 50113), (2849, 7159)]