18971276

素因数分解:

$2^2\times {\mathrm{139}}^1\times {\mathrm{149}}^1\times {\mathrm{229}}^1$

素因数の和:521

約数の個数: 24

約数和(自身を含む): 33810000

約数和(自身を除く): 14838724

約数列:

[1, 2, 4, 139, 149, 229, 278, 298, 458, 556, 596, 916, 20711, 31831, 34121, 41422, 63662, 68242, 82844, 127324, 136484, 4742819, 9485638, 18971276]

約数ペア:

[(1, 18971276), (2, 9485638), (4, 4742819), (139, 136484), (149, 127324), (229, 82844), (278, 68242), (298, 63662), (458, 41422), (556, 34121), (596, 31831), (916, 20711)]