21981544

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{12433}}^1$

素因数の和:12469

約数の個数: 32

約数和(自身を含む): 47000520

約数和(自身を除く): 25018976

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 442, 884, 1768, 12433, 24866, 49732, 99464, 161629, 211361, 323258, 422722, 646516, 845444, 1293032, 1690888, 2747693, 5495386, 10990772, 21981544]

約数ペア:

[(1, 21981544), (2, 10990772), (4, 5495386), (8, 2747693), (13, 1690888), (17, 1293032), (26, 845444), (34, 646516), (52, 422722), (68, 323258), (104, 211361), (136, 161629), (221, 99464), (442, 49732), (884, 24866), (1768, 12433)]