21091345

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{16673}}^1$

素因数の和:16712

約数の個数: 16

約数和(自身を含む): 28812672

約数和(自身を除く): 7721327

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 16673, 83365, 183403, 383479, 917015, 1917395, 4218269, 21091345]

約数ペア:

[(1, 21091345), (5, 4218269), (11, 1917395), (23, 917015), (55, 383479), (115, 183403), (253, 83365), (1265, 16673)]