21138138

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{55921}}^1$

素因数の和:55939

約数の個数: 32

約数和(自身を含む): 53685120

約数和(自身を除く): 32546982

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 378, 55921, 111842, 167763, 335526, 391447, 503289, 782894, 1006578, 1174341, 1509867, 2348682, 3019734, 3523023, 7046046, 10569069, 21138138]

約数ペア:

[(1, 21138138), (2, 10569069), (3, 7046046), (6, 3523023), (7, 3019734), (9, 2348682), (14, 1509867), (18, 1174341), (21, 1006578), (27, 782894), (42, 503289), (54, 391447), (63, 335526), (126, 167763), (189, 111842), (378, 55921)]