21578154

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{4129}}^1$

素因数の和:4214

約数の個数: 32

約数和(自身を含む): 47181120

約数和(自身を除く): 25602966

約数列:

[1, 2, 3, 6, 13, 26, 39, 67, 78, 134, 201, 402, 871, 1742, 2613, 4129, 5226, 8258, 12387, 24774, 53677, 107354, 161031, 276643, 322062, 553286, 829929, 1659858, 3596359, 7192718, 10789077, 21578154]

約数ペア:

[(1, 21578154), (2, 10789077), (3, 7192718), (6, 3596359), (13, 1659858), (26, 829929), (39, 553286), (67, 322062), (78, 276643), (134, 161031), (201, 107354), (402, 53677), (871, 24774), (1742, 12387), (2613, 8258), (4129, 5226)]