20881638625

素因数分解:

$5^3\times {\mathrm{97}}^1\times {\mathrm{439}}^1\times {\mathrm{3923}}^1$

素因数の和:4474

約数の個数: 32

約数和(自身を含む): 26395649280

約数和(自身を除く): 5514010655

約数列:

[1, 5, 25, 97, 125, 439, 485, 2195, 2425, 3923, 10975, 12125, 19615, 42583, 54875, 98075, 212915, 380531, 490375, 1064575, 1722197, 1902655, 5322875, 8610985, 9513275, 43054925, 47566375, 167053109, 215274625, 835265545, 4176327725, 20881638625]

約数ペア:

[(1, 20881638625), (5, 4176327725), (25, 835265545), (97, 215274625), (125, 167053109), (439, 47566375), (485, 43054925), (2195, 9513275), (2425, 8610985), (3923, 5322875), (10975, 1902655), (12125, 1722197), (19615, 1064575), (42583, 490375), (54875, 380531), (98075, 212915)]