21080775

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{9067}}^1$

素因数の和:9111

約数の個数: 24

約数和(自身を含む): 35981824

約数和(自身を除く): 14901049

約数列:

[1, 3, 5, 15, 25, 31, 75, 93, 155, 465, 775, 2325, 9067, 27201, 45335, 136005, 226675, 281077, 680025, 843231, 1405385, 4216155, 7026925, 21080775]

約数ペア:

[(1, 21080775), (3, 7026925), (5, 4216155), (15, 1405385), (25, 843231), (31, 680025), (75, 281077), (93, 226675), (155, 136005), (465, 45335), (775, 27201), (2325, 9067)]