18718399

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{743}}^1$

素因数の和:870

約数の個数: 16

約数和(自身を含む): 22141440

約数和(自身を除く): 3423041

約数列:

[1, 7, 59, 61, 413, 427, 743, 3599, 5201, 25193, 43837, 45323, 306859, 317261, 2674057, 18718399]

約数ペア:

[(1, 18718399), (7, 2674057), (59, 317261), (61, 306859), (413, 45323), (427, 43837), (743, 25193), (3599, 5201)]