81132980

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1\times {\mathrm{317}}^1$

素因数の和:584

約数の個数: 48

約数和(自身を含む): 174375936

約数和(自身を除く): 93242956

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 191, 268, 317, 335, 382, 634, 670, 764, 955, 1268, 1340, 1585, 1910, 3170, 3820, 6340, 12797, 21239, 25594, 42478, 51188, 60547, 63985, 84956, 106195, 121094, 127970, 212390, 242188, 255940, 302735, 424780, 605470, 1210940, 4056649, 8113298, 16226596, 20283245, 40566490, 81132980]

約数ペア:

[(1, 81132980), (2, 40566490), (4, 20283245), (5, 16226596), (10, 8113298), (20, 4056649), (67, 1210940), (134, 605470), (191, 424780), (268, 302735), (317, 255940), (335, 242188), (382, 212390), (634, 127970), (670, 121094), (764, 106195), (955, 84956), (1268, 63985), (1340, 60547), (1585, 51188), (1910, 42478), (3170, 25594), (3820, 21239), (6340, 12797)]