81245780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{52757}}^1$

素因数の和:52784

約数の個数: 48

約数和(自身を含む): 212720256

約数和(自身を除く): 131474476

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 52757, 105514, 211028, 263785, 369299, 527570, 580327, 738598, 1055140, 1160654, 1477196, 1846495, 2321308, 2901635, 3692990, 4062289, 5803270, 7385980, 8124578, 11606540, 16249156, 20311445, 40622890, 81245780]

約数ペア:

[(1, 81245780), (2, 40622890), (4, 20311445), (5, 16249156), (7, 11606540), (10, 8124578), (11, 7385980), (14, 5803270), (20, 4062289), (22, 3692990), (28, 2901635), (35, 2321308), (44, 1846495), (55, 1477196), (70, 1160654), (77, 1055140), (110, 738598), (140, 580327), (154, 527570), (220, 369299), (308, 263785), (385, 211028), (770, 105514), (1540, 52757)]