21981804

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{140909}}^1$

素因数の和:140929

約数の個数: 24

約数和(自身を含む): 55236720

約数和(自身を除く): 33254916

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 140909, 281818, 422727, 563636, 845454, 1690908, 1831817, 3663634, 5495451, 7327268, 10990902, 21981804]

約数ペア:

[(1, 21981804), (2, 10990902), (3, 7327268), (4, 5495451), (6, 3663634), (12, 1831817), (13, 1690908), (26, 845454), (39, 563636), (52, 422727), (78, 281818), (156, 140909)]