81723040

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{557}}^1$

素因数の和:710

約数の個数: 96

約数和(自身を含む): 222735744

約数和(自身を除く): 141012704

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 131, 140, 160, 224, 262, 280, 524, 557, 560, 655, 917, 1048, 1114, 1120, 1310, 1834, 2096, 2228, 2620, 2785, 3668, 3899, 4192, 4456, 4585, 5240, 5570, 7336, 7798, 8912, 9170, 10480, 11140, 14672, 15596, 17824, 18340, 19495, 20960, 22280, 29344, 31192, 36680, 38990, 44560, 62384, 72967, 73360, 77980, 89120, 124768, 145934, 146720, 155960, 291868, 311920, 364835, 510769, 583736, 623840, 729670, 1021538, 1167472, 1459340, 2043076, 2334944, 2553845, 2918680, 4086152, 5107690, 5837360, 8172304, 10215380, 11674720, 16344608, 20430760, 40861520, 81723040]

約数ペア:

[(1, 81723040), (2, 40861520), (4, 20430760), (5, 16344608), (7, 11674720), (8, 10215380), (10, 8172304), (14, 5837360), (16, 5107690), (20, 4086152), (28, 2918680), (32, 2553845), (35, 2334944), (40, 2043076), (56, 1459340), (70, 1167472), (80, 1021538), (112, 729670), (131, 623840), (140, 583736), (160, 510769), (224, 364835), (262, 311920), (280, 291868), (524, 155960), (557, 146720), (560, 145934), (655, 124768), (917, 89120), (1048, 77980), (1114, 73360), (1120, 72967), (1310, 62384), (1834, 44560), (2096, 38990), (2228, 36680), (2620, 31192), (2785, 29344), (3668, 22280), (3899, 20960), (4192, 19495), (4456, 18340), (4585, 17824), (5240, 15596), (5570, 14672), (7336, 11140), (7798, 10480), (8912, 9170)]