28697921

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{349}}^1\times {\mathrm{691}}^1$

素因数の和:1064

約数の個数: 16

約数和(自身を含む): 34876800

約数和(自身を除く): 6178879

約数列:

[1, 7, 17, 119, 349, 691, 2443, 4837, 5933, 11747, 41531, 82229, 241159, 1688113, 4099703, 28697921]

約数ペア:

[(1, 28697921), (7, 4099703), (17, 1688113), (119, 241159), (349, 82229), (691, 41531), (2443, 11747), (4837, 5933)]