38690645

素因数分解:

$5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1999}}^1$

素因数の和:2097

約数の個数: 24

約数和(自身を含む): 54720000

約数和(自身を除く): 16029355

約数列:

[1, 5, 7, 35, 49, 79, 245, 395, 553, 1999, 2765, 3871, 9995, 13993, 19355, 69965, 97951, 157921, 489755, 789605, 1105447, 5527235, 7738129, 38690645]

約数ペア:

[(1, 38690645), (5, 7738129), (7, 5527235), (35, 1105447), (49, 789605), (79, 489755), (245, 157921), (395, 97951), (553, 69965), (1999, 19355), (2765, 13993), (3871, 9995)]