21247471

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{733}}^1$

素因数の和:882

約数の個数: 16

約数和(自身を含む): 25155648

約数和(自身を除く): 3908177

約数列:

[1, 7, 41, 101, 287, 707, 733, 4141, 5131, 28987, 30053, 74033, 210371, 518231, 3035353, 21247471]

約数ペア:

[(1, 21247471), (7, 3035353), (41, 518231), (101, 210371), (287, 74033), (707, 30053), (733, 28987), (4141, 5131)]