21083925

素因数分解:

$3^1\times 5^2\times {\mathrm{197}}^1\times {\mathrm{1427}}^1$

素因数の和:1637

約数の個数: 24

約数和(自身を含む): 35060256

約数和(自身を除く): 13976331

約数列:

[1, 3, 5, 15, 25, 75, 197, 591, 985, 1427, 2955, 4281, 4925, 7135, 14775, 21405, 35675, 107025, 281119, 843357, 1405595, 4216785, 7027975, 21083925]

約数ペア:

[(1, 21083925), (3, 7027975), (5, 4216785), (15, 1405595), (25, 843357), (75, 281119), (197, 107025), (591, 35675), (985, 21405), (1427, 14775), (2955, 7135), (4281, 4925)]