256783332

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{127}}^1\times {\mathrm{997}}^1$

素因数の和:1157

約数の個数: 72

約数和(自身を含む): 654560256

約数和(自身を除く): 397776924

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 127, 156, 169, 254, 338, 381, 507, 508, 676, 762, 997, 1014, 1524, 1651, 1994, 2028, 2991, 3302, 3988, 4953, 5982, 6604, 9906, 11964, 12961, 19812, 21463, 25922, 38883, 42926, 51844, 64389, 77766, 85852, 126619, 128778, 155532, 168493, 253238, 257556, 336986, 379857, 505479, 506476, 673972, 759714, 1010958, 1519428, 1646047, 2021916, 3292094, 4938141, 6584188, 9876282, 19752564, 21398611, 42797222, 64195833, 85594444, 128391666, 256783332]

約数ペア:

[(1, 256783332), (2, 128391666), (3, 85594444), (4, 64195833), (6, 42797222), (12, 21398611), (13, 19752564), (26, 9876282), (39, 6584188), (52, 4938141), (78, 3292094), (127, 2021916), (156, 1646047), (169, 1519428), (254, 1010958), (338, 759714), (381, 673972), (507, 506476), (508, 505479), (676, 379857), (762, 336986), (997, 257556), (1014, 253238), (1524, 168493), (1651, 155532), (1994, 128778), (2028, 126619), (2991, 85852), (3302, 77766), (3988, 64389), (4953, 51844), (5982, 42926), (6604, 38883), (9906, 25922), (11964, 21463), (12961, 19812)]