21145275

素因数分解:

$3^2\times 5^2\times {\mathrm{93979}}^1$

素因数の和:93995

約数の個数: 18

約数和(自身を含む): 37873940

約数和(自身を除く): 16728665

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 93979, 281937, 469895, 845811, 1409685, 2349475, 4229055, 7048425, 21145275]

約数ペア:

[(1, 21145275), (3, 7048425), (5, 4229055), (9, 2349475), (15, 1409685), (25, 845811), (45, 469895), (75, 281937), (225, 93979)]