20349950

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{691}}^1$

素因数の和:753

約数の個数: 48

約数和(自身を含む): 41187840

約数和(自身を除く): 20837890

約数列:

[1, 2, 5, 10, 19, 25, 31, 38, 50, 62, 95, 155, 190, 310, 475, 589, 691, 775, 950, 1178, 1382, 1550, 2945, 3455, 5890, 6910, 13129, 14725, 17275, 21421, 26258, 29450, 34550, 42842, 65645, 107105, 131290, 214210, 328225, 406999, 535525, 656450, 813998, 1071050, 2034995, 4069990, 10174975, 20349950]

約数ペア:

[(1, 20349950), (2, 10174975), (5, 4069990), (10, 2034995), (19, 1071050), (25, 813998), (31, 656450), (38, 535525), (50, 406999), (62, 328225), (95, 214210), (155, 131290), (190, 107105), (310, 65645), (475, 42842), (589, 34550), (691, 29450), (775, 26258), (950, 21421), (1178, 17275), (1382, 14725), (1550, 13129), (2945, 6910), (3455, 5890)]