21408675

素因数分解:

$3^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{2179}}^1$

素因数の和:2323

約数の個数: 24

約数和(自身を含む): 35682240

約数和(自身を除く): 14273565

約数列:

[1, 3, 5, 15, 25, 75, 131, 393, 655, 1965, 2179, 3275, 6537, 9825, 10895, 32685, 54475, 163425, 285449, 856347, 1427245, 4281735, 7136225, 21408675]

約数ペア:

[(1, 21408675), (3, 7136225), (5, 4281735), (15, 1427245), (25, 856347), (75, 285449), (131, 163425), (393, 54475), (655, 32685), (1965, 10895), (2179, 9825), (3275, 6537)]