78288987

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{449}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 131673600

約数和(自身を除く): 53384613

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 361, 399, 437, 449, 483, 1083, 1311, 1347, 2527, 3059, 3143, 7581, 8303, 8531, 9177, 9429, 10327, 24909, 25593, 30981, 58121, 59717, 72289, 162089, 174363, 179151, 196213, 216867, 486267, 588639, 1134623, 1373491, 3403869, 3728047, 4120473, 11184141, 26096329, 78288987]

約数ペア:

[(1, 78288987), (3, 26096329), (7, 11184141), (19, 4120473), (21, 3728047), (23, 3403869), (57, 1373491), (69, 1134623), (133, 588639), (161, 486267), (361, 216867), (399, 196213), (437, 179151), (449, 174363), (483, 162089), (1083, 72289), (1311, 59717), (1347, 58121), (2527, 30981), (3059, 25593), (3143, 24909), (7581, 10327), (8303, 9429), (8531, 9177)]