21919988

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{919}}^1$

素因数の和:1079

約数の個数: 24

約数和(自身を含む): 39412800

約数和(自身を除く): 17492812

約数列:

[1, 2, 4, 67, 89, 134, 178, 268, 356, 919, 1838, 3676, 5963, 11926, 23852, 61573, 81791, 123146, 163582, 246292, 327164, 5479997, 10959994, 21919988]

約数ペア:

[(1, 21919988), (2, 10959994), (4, 5479997), (67, 327164), (89, 246292), (134, 163582), (178, 123146), (268, 81791), (356, 61573), (919, 23852), (1838, 11926), (3676, 5963)]