21897160

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17659}}^1$

素因数の和:17701

約数の個数: 32

約数和(自身を含む): 50860800

約数和(自身を除く): 28963640

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17659, 35318, 70636, 88295, 141272, 176590, 353180, 547429, 706360, 1094858, 2189716, 2737145, 4379432, 5474290, 10948580, 21897160]

約数ペア:

[(1, 21897160), (2, 10948580), (4, 5474290), (5, 4379432), (8, 2737145), (10, 2189716), (20, 1094858), (31, 706360), (40, 547429), (62, 353180), (124, 176590), (155, 141272), (248, 88295), (310, 70636), (620, 35318), (1240, 17659)]