21262748

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{21521}}^1$

素因数の和:21557

約数の個数: 24

約数和(自身を含む): 42183120

約数和(自身を除く): 20920372

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 21521, 43042, 86084, 279773, 408899, 559546, 817798, 1119092, 1635596, 5315687, 10631374, 21262748]

約数ペア:

[(1, 21262748), (2, 10631374), (4, 5315687), (13, 1635596), (19, 1119092), (26, 817798), (38, 559546), (52, 408899), (76, 279773), (247, 86084), (494, 43042), (988, 21521)]