21870745

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{7159}}^1$

素因数の和:7224

約数の個数: 16

約数和(自身を含む): 28869120

約数和(自身を除く): 6998375

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 7159, 35795, 93067, 336473, 465335, 1682365, 4374149, 21870745]

約数ペア:

[(1, 21870745), (5, 4374149), (13, 1682365), (47, 465335), (65, 336473), (235, 93067), (611, 35795), (3055, 7159)]