21657415

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{4973}}^1$

素因数の和:5058

約数の個数: 16

約数和(自身を含む): 28411488

約数和(自身を除く): 6754073

約数列:

[1, 5, 13, 65, 67, 335, 871, 4355, 4973, 24865, 64649, 323245, 333191, 1665955, 4331483, 21657415]

約数ペア:

[(1, 21657415), (5, 4331483), (13, 1665955), (65, 333191), (67, 323245), (335, 64649), (871, 24865), (4355, 4973)]