81378235

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1229}}^1$

素因数の和:1311

約数の個数: 32

約数和(自身を含む): 111585600

約数和(自身を除く): 30207365

約数列:

[1, 5, 17, 19, 41, 85, 95, 205, 323, 697, 779, 1229, 1615, 3485, 3895, 6145, 13243, 20893, 23351, 50389, 66215, 104465, 116755, 251945, 396967, 856613, 957391, 1984835, 4283065, 4786955, 16275647, 81378235]

約数ペア:

[(1, 81378235), (5, 16275647), (17, 4786955), (19, 4283065), (41, 1984835), (85, 957391), (95, 856613), (205, 396967), (323, 251945), (697, 116755), (779, 104465), (1229, 66215), (1615, 50389), (3485, 23351), (3895, 20893), (6145, 13243)]