21423790

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{69109}}^1$

素因数の和:69147

約数の個数: 16

約数和(自身を含む): 39807360

約数和(自身を除く): 18383570

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 69109, 138218, 345545, 691090, 2142379, 4284758, 10711895, 21423790]

約数ペア:

[(1, 21423790), (2, 10711895), (5, 4284758), (10, 2142379), (31, 691090), (62, 345545), (155, 138218), (310, 69109)]