19724185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{15971}}^1$

素因数の和:16008

約数の個数: 16

約数和(自身を含む): 26832960

約数和(自身を除く): 7108775

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 15971, 79855, 207623, 303449, 1038115, 1517245, 3944837, 19724185]

約数ペア:

[(1, 19724185), (5, 3944837), (13, 1517245), (19, 1038115), (65, 303449), (95, 207623), (247, 79855), (1235, 15971)]