21497218

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1\times {\mathrm{1171}}^1$

素因数の和:1377

約数の個数: 16

約数和(自身を含む): 32994144

約数和(自身を除く): 11496926

約数列:

[1, 2, 67, 134, 137, 274, 1171, 2342, 9179, 18358, 78457, 156914, 160427, 320854, 10748609, 21497218]

約数ペア:

[(1, 21497218), (2, 10748609), (67, 320854), (134, 160427), (137, 156914), (274, 78457), (1171, 18358), (2342, 9179)]