18924871

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{821}}^1$

素因数の和:954

約数の個数: 16

約数和(自身を含む): 22489920

約数和(自身を除く): 3565049

約数列:

[1, 7, 37, 89, 259, 623, 821, 3293, 5747, 23051, 30377, 73069, 212639, 511483, 2703553, 18924871]

約数ペア:

[(1, 18924871), (7, 2703553), (37, 511483), (89, 212639), (259, 73069), (623, 30377), (821, 23051), (3293, 5747)]