28749861

素因数分解:

$3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{3331}}^1$

素因数の和:3481

約数の個数: 24

約数和(自身を含む): 47820864

約数和(自身を除く): 19071003

約数列:

[1, 3, 7, 9, 21, 63, 137, 411, 959, 1233, 2877, 3331, 8631, 9993, 23317, 29979, 69951, 209853, 456347, 1369041, 3194429, 4107123, 9583287, 28749861]

約数ペア:

[(1, 28749861), (3, 9583287), (7, 4107123), (9, 3194429), (21, 1369041), (63, 456347), (137, 209853), (411, 69951), (959, 29979), (1233, 23317), (2877, 9993), (3331, 8631)]