20643406

素因数分解:

$2^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{12391}}^1$

素因数の和:12424

約数の個数: 24

約数和(自身を含む): 38142576

約数和(自身を除く): 17499170

約数列:

[1, 2, 7, 14, 17, 34, 49, 98, 119, 238, 833, 1666, 12391, 24782, 86737, 173474, 210647, 421294, 607159, 1214318, 1474529, 2949058, 10321703, 20643406]

約数ペア:

[(1, 20643406), (2, 10321703), (7, 2949058), (14, 1474529), (17, 1214318), (34, 607159), (49, 421294), (98, 210647), (119, 173474), (238, 86737), (833, 24782), (1666, 12391)]