21091207

素因数分解:

${\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{307}}^1$

素因数の和:462

約数の個数: 16

約数和(自身を含む): 23063040

約数和(自身を除く): 1971833

約数列:

[1, 23, 29, 103, 307, 667, 2369, 2987, 7061, 8903, 31621, 68701, 204769, 727283, 917009, 21091207]

約数ペア:

[(1, 21091207), (23, 917009), (29, 727283), (103, 204769), (307, 68701), (667, 31621), (2369, 8903), (2987, 7061)]