21698518

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{277}}^1\times {\mathrm{739}}^1$

素因数の和:1071

約数の個数: 16

約数和(自身を含む): 33326640

約数和(自身を除く): 11628122

約数列:

[1, 2, 53, 106, 277, 554, 739, 1478, 14681, 29362, 39167, 78334, 204703, 409406, 10849259, 21698518]

約数ペア:

[(1, 21698518), (2, 10849259), (53, 409406), (106, 204703), (277, 78334), (554, 39167), (739, 29362), (1478, 14681)]