21995428

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{60427}}^1$

素因数の和:60451

約数の個数: 24

約数和(自身を含む): 47375552

約数和(自身を除く): 25380124

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 60427, 120854, 241708, 422989, 785551, 845978, 1571102, 1691956, 3142204, 5498857, 10997714, 21995428]

約数ペア:

[(1, 21995428), (2, 10997714), (4, 5498857), (7, 3142204), (13, 1691956), (14, 1571102), (26, 845978), (28, 785551), (52, 422989), (91, 241708), (182, 120854), (364, 60427)]