18916191

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{15803}}^1$

素因数の和:15835

約数の個数: 24

約数和(自身を含む): 32872320

約数和(自身を除く): 13956129

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 15803, 47409, 110621, 142227, 300257, 331863, 900771, 995589, 2101799, 2702313, 6305397, 18916191]

約数ペア:

[(1, 18916191), (3, 6305397), (7, 2702313), (9, 2101799), (19, 995589), (21, 900771), (57, 331863), (63, 300257), (133, 142227), (171, 110621), (399, 47409), (1197, 15803)]