21849373

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{12637}}^1$

素因数の和:12676

約数の個数: 16

約数和(自身を含む): 28309120

約数和(自身を除く): 6459747

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 12637, 88459, 164281, 240103, 1149967, 1680721, 3121339, 21849373]

約数ペア:

[(1, 21849373), (7, 3121339), (13, 1680721), (19, 1149967), (91, 240103), (133, 164281), (247, 88459), (1729, 12637)]