20021687

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{179}}^1$

素因数の和:263

約数の個数: 24

約数和(自身を含む): 25084800

約数和(自身を除く): 5063113

約数列:

[1, 7, 19, 29, 133, 179, 203, 551, 841, 1253, 3401, 3857, 5191, 5887, 15979, 23807, 36337, 98629, 111853, 150539, 690403, 1053773, 2860241, 20021687]

約数ペア:

[(1, 20021687), (7, 2860241), (19, 1053773), (29, 690403), (133, 150539), (179, 111853), (203, 98629), (551, 36337), (841, 23807), (1253, 15979), (3401, 5887), (3857, 5191)]