21490125

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{3371}}^1$

素因数の和:3406

約数の個数: 32

約数和(自身を含む): 37874304

約数和(自身を除く): 16384179

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 125, 255, 375, 425, 1275, 2125, 3371, 6375, 10113, 16855, 50565, 57307, 84275, 171921, 252825, 286535, 421375, 859605, 1264125, 1432675, 4298025, 7163375, 21490125]

約数ペア:

[(1, 21490125), (3, 7163375), (5, 4298025), (15, 1432675), (17, 1264125), (25, 859605), (51, 421375), (75, 286535), (85, 252825), (125, 171921), (255, 84275), (375, 57307), (425, 50565), (1275, 16855), (2125, 10113), (3371, 6375)]