20820865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{733}}^1$

素因数の和:793

約数の個数: 32

約数和(自身を含む): 29594880

約数和(自身を除く): 8774015

約数列:

[1, 5, 13, 19, 23, 65, 95, 115, 247, 299, 437, 733, 1235, 1495, 2185, 3665, 5681, 9529, 13927, 16859, 28405, 47645, 69635, 84295, 181051, 219167, 320321, 905255, 1095835, 1601605, 4164173, 20820865]

約数ペア:

[(1, 20820865), (5, 4164173), (13, 1601605), (19, 1095835), (23, 905255), (65, 320321), (95, 219167), (115, 181051), (247, 84295), (299, 69635), (437, 47645), (733, 28405), (1235, 16859), (1495, 13927), (2185, 9529), (3665, 5681)]