19993715

素因数分解:

$5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1033}}^1$

素因数の和:1131

約数の個数: 24

約数和(自身を含む): 28290240

約数和(自身を除く): 8296525

約数列:

[1, 5, 7, 35, 49, 79, 245, 395, 553, 1033, 2765, 3871, 5165, 7231, 19355, 36155, 50617, 81607, 253085, 408035, 571249, 2856245, 3998743, 19993715]

約数ペア:

[(1, 19993715), (5, 3998743), (7, 2856245), (35, 571249), (49, 408035), (79, 253085), (245, 81607), (395, 50617), (553, 36155), (1033, 19355), (2765, 7231), (3871, 5165)]