21537362

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19979}}^1$

素因数の和:20006

約数の個数: 24

約数和(自身を含む): 40998960

約数和(自身を除く): 19461598

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 19979, 39958, 139853, 219769, 279706, 439538, 978971, 1538383, 1957942, 3076766, 10768681, 21537362]

約数ペア:

[(1, 21537362), (2, 10768681), (7, 3076766), (11, 1957942), (14, 1538383), (22, 978971), (49, 439538), (77, 279706), (98, 219769), (154, 139853), (539, 39958), (1078, 19979)]