20358500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{2143}}^1$

素因数の和:2181

約数の個数: 48

約数和(自身を含む): 46824960

約数和(自身を除く): 26466460

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 475, 500, 950, 1900, 2143, 2375, 4286, 4750, 8572, 9500, 10715, 21430, 40717, 42860, 53575, 81434, 107150, 162868, 203585, 214300, 267875, 407170, 535750, 814340, 1017925, 1071500, 2035850, 4071700, 5089625, 10179250, 20358500]

約数ペア:

[(1, 20358500), (2, 10179250), (4, 5089625), (5, 4071700), (10, 2035850), (19, 1071500), (20, 1017925), (25, 814340), (38, 535750), (50, 407170), (76, 267875), (95, 214300), (100, 203585), (125, 162868), (190, 107150), (250, 81434), (380, 53575), (475, 42860), (500, 40717), (950, 21430), (1900, 10715), (2143, 9500), (2375, 8572), (4286, 4750)]