21765225

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{10007}}^1$

素因数の和:10049

約数の個数: 24

約数和(自身を含む): 37229760

約数和(自身を除く): 15464535

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 435, 725, 2175, 10007, 30021, 50035, 150105, 250175, 290203, 750525, 870609, 1451015, 4353045, 7255075, 21765225]

約数ペア:

[(1, 21765225), (3, 7255075), (5, 4353045), (15, 1451015), (25, 870609), (29, 750525), (75, 290203), (87, 250175), (145, 150105), (435, 50035), (725, 30021), (2175, 10007)]