21176475

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{977}}^1$

素因数の和:1024

約数の個数: 36

約数和(自身を含む): 37230504

約数和(自身を除く): 16054029

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 289, 425, 867, 977, 1275, 1445, 2931, 4335, 4885, 7225, 14655, 16609, 21675, 24425, 49827, 73275, 83045, 249135, 282353, 415225, 847059, 1245675, 1411765, 4235295, 7058825, 21176475]

約数ペア:

[(1, 21176475), (3, 7058825), (5, 4235295), (15, 1411765), (17, 1245675), (25, 847059), (51, 415225), (75, 282353), (85, 249135), (255, 83045), (289, 73275), (425, 49827), (867, 24425), (977, 21675), (1275, 16609), (1445, 14655), (2931, 7225), (4335, 4885)]