18715516

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{821}}^1$

素因数の和:1005

約数の個数: 24

約数和(自身を含む): 33833520

約数和(自身を除く): 15118004

約数列:

[1, 2, 4, 41, 82, 139, 164, 278, 556, 821, 1642, 3284, 5699, 11398, 22796, 33661, 67322, 114119, 134644, 228238, 456476, 4678879, 9357758, 18715516]

約数ペア:

[(1, 18715516), (2, 9357758), (4, 4678879), (41, 456476), (82, 228238), (139, 134644), (164, 114119), (278, 67322), (556, 33661), (821, 22796), (1642, 11398), (3284, 5699)]