21008475

素因数分解:

$3^2\times 5^2\times {\mathrm{93371}}^1$

素因数の和:93387

約数の個数: 18

約数和(自身を含む): 37628916

約数和(自身を除く): 16620441

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 93371, 280113, 466855, 840339, 1400565, 2334275, 4201695, 7002825, 21008475]

約数ペア:

[(1, 21008475), (3, 7002825), (5, 4201695), (9, 2334275), (15, 1400565), (25, 840339), (45, 466855), (75, 280113), (225, 93371)]