20915902

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{51517}}^1$

素因数の和:51555

約数の個数: 16

約数和(自身を含む): 37092960

約数和(自身を除く): 16177058

約数列:

[1, 2, 7, 14, 29, 58, 203, 406, 51517, 103034, 360619, 721238, 1493993, 2987986, 10457951, 20915902]

約数ペア:

[(1, 20915902), (2, 10457951), (7, 2987986), (14, 1493993), (29, 721238), (58, 360619), (203, 103034), (406, 51517)]