181731920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{577}}^1$

素因数の和:748

約数の個数: 80

約数和(自身を含む): 440352768

約数和(自身を除く): 258620848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 127, 155, 248, 254, 310, 496, 508, 577, 620, 635, 1016, 1154, 1240, 1270, 2032, 2308, 2480, 2540, 2885, 3937, 4616, 5080, 5770, 7874, 9232, 10160, 11540, 15748, 17887, 19685, 23080, 31496, 35774, 39370, 46160, 62992, 71548, 73279, 78740, 89435, 143096, 146558, 157480, 178870, 286192, 293116, 314960, 357740, 366395, 586232, 715480, 732790, 1172464, 1430960, 1465580, 2271649, 2931160, 4543298, 5862320, 9086596, 11358245, 18173192, 22716490, 36346384, 45432980, 90865960, 181731920]

約数ペア:

[(1, 181731920), (2, 90865960), (4, 45432980), (5, 36346384), (8, 22716490), (10, 18173192), (16, 11358245), (20, 9086596), (31, 5862320), (40, 4543298), (62, 2931160), (80, 2271649), (124, 1465580), (127, 1430960), (155, 1172464), (248, 732790), (254, 715480), (310, 586232), (496, 366395), (508, 357740), (577, 314960), (620, 293116), (635, 286192), (1016, 178870), (1154, 157480), (1240, 146558), (1270, 143096), (2032, 89435), (2308, 78740), (2480, 73279), (2540, 71548), (2885, 62992), (3937, 46160), (4616, 39370), (5080, 35774), (5770, 31496), (7874, 23080), (9232, 19685), (10160, 17887), (11540, 15748)]