81412864

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1439}}^1$

素因数の和:1485

約数の個数: 72

約数和(自身を含む): 185431680

約数和(自身を除く): 104018816

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 64, 68, 104, 128, 136, 208, 221, 256, 272, 416, 442, 544, 832, 884, 1088, 1439, 1664, 1768, 2176, 2878, 3328, 3536, 4352, 5756, 7072, 11512, 14144, 18707, 23024, 24463, 28288, 37414, 46048, 48926, 56576, 74828, 92096, 97852, 149656, 184192, 195704, 299312, 318019, 368384, 391408, 598624, 636038, 782816, 1197248, 1272076, 1565632, 2394496, 2544152, 3131264, 4788992, 5088304, 6262528, 10176608, 20353216, 40706432, 81412864]

約数ペア:

[(1, 81412864), (2, 40706432), (4, 20353216), (8, 10176608), (13, 6262528), (16, 5088304), (17, 4788992), (26, 3131264), (32, 2544152), (34, 2394496), (52, 1565632), (64, 1272076), (68, 1197248), (104, 782816), (128, 636038), (136, 598624), (208, 391408), (221, 368384), (256, 318019), (272, 299312), (416, 195704), (442, 184192), (544, 149656), (832, 97852), (884, 92096), (1088, 74828), (1439, 56576), (1664, 48926), (1768, 46048), (2176, 37414), (2878, 28288), (3328, 24463), (3536, 23024), (4352, 18707), (5756, 14144), (7072, 11512)]