81943810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:307

約数の個数: 64

約数和(自身を含む): 165255552

約数和(自身を除く): 83311742

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 107, 130, 137, 214, 215, 274, 430, 535, 559, 685, 1070, 1118, 1370, 1391, 1781, 2782, 2795, 3562, 4601, 5590, 5891, 6955, 8905, 9202, 11782, 13910, 14659, 17810, 23005, 29318, 29455, 46010, 58910, 59813, 73295, 76583, 119626, 146590, 153166, 190567, 299065, 381134, 382915, 598130, 630337, 765830, 952835, 1260674, 1905670, 3151685, 6303370, 8194381, 16388762, 40971905, 81943810]

約数ペア:

[(1, 81943810), (2, 40971905), (5, 16388762), (10, 8194381), (13, 6303370), (26, 3151685), (43, 1905670), (65, 1260674), (86, 952835), (107, 765830), (130, 630337), (137, 598130), (214, 382915), (215, 381134), (274, 299065), (430, 190567), (535, 153166), (559, 146590), (685, 119626), (1070, 76583), (1118, 73295), (1370, 59813), (1391, 58910), (1781, 46010), (2782, 29455), (2795, 29318), (3562, 23005), (4601, 17810), (5590, 14659), (5891, 13910), (6955, 11782), (8905, 9202)]