18980164

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{35677}}^1$

素因数の和:35707

約数の個数: 24

約数和(自身を含む): 39959360

約数和(自身を除く): 20979196

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 35677, 71354, 142708, 249739, 499478, 677863, 998956, 1355726, 2711452, 4745041, 9490082, 18980164]

約数ペア:

[(1, 18980164), (2, 9490082), (4, 4745041), (7, 2711452), (14, 1355726), (19, 998956), (28, 677863), (38, 499478), (76, 249739), (133, 142708), (266, 71354), (532, 35677)]