199901895

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{499}}^1\times {\mathrm{1571}}^1$

素因数の和:2095

約数の個数: 32

約数和(自身を含む): 339552000

約数和(自身を除く): 139650105

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 499, 1497, 1571, 2495, 4713, 7485, 7855, 8483, 23565, 25449, 26707, 42415, 80121, 127245, 133535, 400605, 783929, 2351787, 3919645, 11758935, 13326793, 39980379, 66633965, 199901895]

約数ペア:

[(1, 199901895), (3, 66633965), (5, 39980379), (15, 13326793), (17, 11758935), (51, 3919645), (85, 2351787), (255, 783929), (499, 400605), (1497, 133535), (1571, 127245), (2495, 80121), (4713, 42415), (7485, 26707), (7855, 25449), (8483, 23565)]