18642005

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2797}}^1$

素因数の和:2876

約数の個数: 16

約数和(自身を含む): 23637504

約数和(自身を除く): 4995499

約数列:

[1, 5, 31, 43, 155, 215, 1333, 2797, 6665, 13985, 86707, 120271, 433535, 601355, 3728401, 18642005]

約数ペア:

[(1, 18642005), (5, 3728401), (31, 601355), (43, 433535), (155, 120271), (215, 86707), (1333, 13985), (2797, 6665)]