128518131

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{23629}}^1$

素因数の和:23683

約数の個数: 24

約数和(自身を含む): 204730320

約数和(自身を除く): 76212189

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 5439, 23629, 70887, 165403, 496209, 874273, 1157821, 2622819, 3473463, 6119911, 18359733, 42839377, 128518131]

約数ペア:

[(1, 128518131), (3, 42839377), (7, 18359733), (21, 6119911), (37, 3473463), (49, 2622819), (111, 1157821), (147, 874273), (259, 496209), (777, 165403), (1813, 70887), (5439, 23629)]