81211928

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{601}}^1$

素因数の和:760

約数の個数: 64

約数和(自身を含む): 184934400

約数和(自身を除く): 103722472

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 127, 133, 152, 254, 266, 508, 532, 601, 889, 1016, 1064, 1202, 1778, 2404, 2413, 3556, 4207, 4808, 4826, 7112, 8414, 9652, 11419, 16828, 16891, 19304, 22838, 33656, 33782, 45676, 67564, 76327, 79933, 91352, 135128, 152654, 159866, 305308, 319732, 534289, 610616, 639464, 1068578, 1450213, 2137156, 2900426, 4274312, 5800852, 10151491, 11601704, 20302982, 40605964, 81211928]

約数ペア:

[(1, 81211928), (2, 40605964), (4, 20302982), (7, 11601704), (8, 10151491), (14, 5800852), (19, 4274312), (28, 2900426), (38, 2137156), (56, 1450213), (76, 1068578), (127, 639464), (133, 610616), (152, 534289), (254, 319732), (266, 305308), (508, 159866), (532, 152654), (601, 135128), (889, 91352), (1016, 79933), (1064, 76327), (1202, 67564), (1778, 45676), (2404, 33782), (2413, 33656), (3556, 22838), (4207, 19304), (4808, 16891), (4826, 16828), (7112, 11419), (8414, 9652)]