20198456875

素因数分解:

$5^4\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{9743}}^1$

素因数の和:9901

約数の個数: 40

約数和(自身を含む): 26300381184

約数和(自身を除く): 6101924309

約数列:

[1, 5, 25, 31, 107, 125, 155, 535, 625, 775, 2675, 3317, 3875, 9743, 13375, 16585, 19375, 48715, 66875, 82925, 243575, 302033, 414625, 1042501, 1217875, 1510165, 2073125, 5212505, 6089375, 7550825, 26062525, 32317531, 37754125, 130312625, 161587655, 188770625, 651563125, 807938275, 4039691375, 20198456875]

約数ペア:

[(1, 20198456875), (5, 4039691375), (25, 807938275), (31, 651563125), (107, 188770625), (125, 161587655), (155, 130312625), (535, 37754125), (625, 32317531), (775, 26062525), (2675, 7550825), (3317, 6089375), (3875, 5212505), (9743, 2073125), (13375, 1510165), (16585, 1217875), (19375, 1042501), (48715, 414625), (66875, 302033), (82925, 243575)]