20485415

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{631}}^1$

素因数の和:830

約数の個数: 16

約数和(自身を含む): 25360896

約数和(自身を除く): 4875481

約数列:

[1, 5, 43, 151, 215, 631, 755, 3155, 6493, 27133, 32465, 95281, 135665, 476405, 4097083, 20485415]

約数ペア:

[(1, 20485415), (5, 4097083), (43, 476405), (151, 135665), (215, 95281), (631, 32465), (755, 27133), (3155, 6493)]