138978

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{1103}}^1$

素因数の和:1118

約数の個数: 24

約数和(自身を含む): 344448

約数和(自身を除く): 205470

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 1103, 2206, 3309, 6618, 7721, 9927, 15442, 19854, 23163, 46326, 69489, 138978]

約数ペア:

[(1, 138978), (2, 69489), (3, 46326), (6, 23163), (7, 19854), (9, 15442), (14, 9927), (18, 7721), (21, 6618), (42, 3309), (63, 2206), (126, 1103)]