21078435

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1949}}^1$

素因数の和:2067

約数の個数: 32

約数和(自身を含む): 38937600

約数和(自身を除く): 17859165

約数列:

[1, 3, 5, 7, 15, 21, 35, 103, 105, 309, 515, 721, 1545, 1949, 2163, 3605, 5847, 9745, 10815, 13643, 29235, 40929, 68215, 200747, 204645, 602241, 1003735, 1405229, 3011205, 4215687, 7026145, 21078435]

約数ペア:

[(1, 21078435), (3, 7026145), (5, 4215687), (7, 3011205), (15, 1405229), (21, 1003735), (35, 602241), (103, 204645), (105, 200747), (309, 68215), (515, 40929), (721, 29235), (1545, 13643), (1949, 10815), (2163, 9745), (3605, 5847)]