18993331

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{887}}^1$

素因数の和:943

約数の個数: 24

約数和(自身を含む): 24295680

約数和(自身を除く): 5302349

約数列:

[1, 7, 19, 23, 49, 133, 161, 437, 887, 931, 1127, 3059, 6209, 16853, 20401, 21413, 43463, 117971, 142807, 387619, 825797, 999649, 2713333, 18993331]

約数ペア:

[(1, 18993331), (7, 2713333), (19, 999649), (23, 825797), (49, 387619), (133, 142807), (161, 117971), (437, 43463), (887, 21413), (931, 20401), (1127, 16853), (3059, 6209)]