21896240

素因数分解:

$2^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{1433}}^1$

素因数の和:1637

約数の個数: 40

約数和(自身を含む): 51211008

約数和(自身を除く): 29314768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 191, 382, 764, 955, 1433, 1528, 1910, 2866, 3056, 3820, 5732, 7165, 7640, 11464, 14330, 15280, 22928, 28660, 57320, 114640, 273703, 547406, 1094812, 1368515, 2189624, 2737030, 4379248, 5474060, 10948120, 21896240]

約数ペア:

[(1, 21896240), (2, 10948120), (4, 5474060), (5, 4379248), (8, 2737030), (10, 2189624), (16, 1368515), (20, 1094812), (40, 547406), (80, 273703), (191, 114640), (382, 57320), (764, 28660), (955, 22928), (1433, 15280), (1528, 14330), (1910, 11464), (2866, 7640), (3056, 7165), (3820, 5732)]