21351880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48527}}^1$

素因数の和:48549

約数の個数: 32

約数和(自身を含む): 52410240

約数和(自身を除く): 31058360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48527, 97054, 194108, 242635, 388216, 485270, 533797, 970540, 1067594, 1941080, 2135188, 2668985, 4270376, 5337970, 10675940, 21351880]

約数ペア:

[(1, 21351880), (2, 10675940), (4, 5337970), (5, 4270376), (8, 2668985), (10, 2135188), (11, 1941080), (20, 1067594), (22, 970540), (40, 533797), (44, 485270), (55, 388216), (88, 242635), (110, 194108), (220, 97054), (440, 48527)]