21381465

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{269}}^1\times {\mathrm{757}}^1$

素因数の和:1041

約数の個数: 32

約数和(自身を含む): 39294720

約数和(自身を除く): 17913255

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 269, 757, 807, 1345, 1883, 2271, 3785, 4035, 5299, 5649, 9415, 11355, 15897, 26495, 28245, 79485, 203633, 610899, 1018165, 1425431, 3054495, 4276293, 7127155, 21381465]

約数ペア:

[(1, 21381465), (3, 7127155), (5, 4276293), (7, 3054495), (15, 1425431), (21, 1018165), (35, 610899), (105, 203633), (269, 79485), (757, 28245), (807, 26495), (1345, 15897), (1883, 11355), (2271, 9415), (3785, 5649), (4035, 5299)]