64731980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{547}}^1$

素因数の和:714

約数の個数: 48

約数和(自身を含む): 139845216

約数和(自身を除く): 75113236

約数列:

[1, 2, 4, 5, 10, 20, 61, 97, 122, 194, 244, 305, 388, 485, 547, 610, 970, 1094, 1220, 1940, 2188, 2735, 5470, 5917, 10940, 11834, 23668, 29585, 33367, 53059, 59170, 66734, 106118, 118340, 133468, 166835, 212236, 265295, 333670, 530590, 667340, 1061180, 3236599, 6473198, 12946396, 16182995, 32365990, 64731980]

約数ペア:

[(1, 64731980), (2, 32365990), (4, 16182995), (5, 12946396), (10, 6473198), (20, 3236599), (61, 1061180), (97, 667340), (122, 530590), (194, 333670), (244, 265295), (305, 212236), (388, 166835), (485, 133468), (547, 118340), (610, 106118), (970, 66734), (1094, 59170), (1220, 53059), (1940, 33367), (2188, 29585), (2735, 23668), (5470, 11834), (5917, 10940)]