20408805

素因数分解:

$3^2\times 5^1\times {\mathrm{347}}^1\times {\mathrm{1307}}^1$

素因数の和:1665

約数の個数: 24

約数和(自身を含む): 35504352

約数和(自身を除く): 15095547

約数列:

[1, 3, 5, 9, 15, 45, 347, 1041, 1307, 1735, 3123, 3921, 5205, 6535, 11763, 15615, 19605, 58815, 453529, 1360587, 2267645, 4081761, 6802935, 20408805]

約数ペア:

[(1, 20408805), (3, 6802935), (5, 4081761), (9, 2267645), (15, 1360587), (45, 453529), (347, 58815), (1041, 19605), (1307, 15615), (1735, 11763), (3123, 6535), (3921, 5205)]