2661680

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{97}}^1$

素因数の和:131

約数の個数: 80

約数和(自身を含む): 7291200

約数和(自身を除く): 4629520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 97, 98, 112, 140, 194, 196, 245, 280, 343, 388, 392, 485, 490, 560, 679, 686, 776, 784, 970, 980, 1358, 1372, 1552, 1715, 1940, 1960, 2716, 2744, 3395, 3430, 3880, 3920, 4753, 5432, 5488, 6790, 6860, 7760, 9506, 10864, 13580, 13720, 19012, 23765, 27160, 27440, 33271, 38024, 47530, 54320, 66542, 76048, 95060, 133084, 166355, 190120, 266168, 332710, 380240, 532336, 665420, 1330840, 2661680]

約数ペア:

[(1, 2661680), (2, 1330840), (4, 665420), (5, 532336), (7, 380240), (8, 332710), (10, 266168), (14, 190120), (16, 166355), (20, 133084), (28, 95060), (35, 76048), (40, 66542), (49, 54320), (56, 47530), (70, 38024), (80, 33271), (97, 27440), (98, 27160), (112, 23765), (140, 19012), (194, 13720), (196, 13580), (245, 10864), (280, 9506), (343, 7760), (388, 6860), (392, 6790), (485, 5488), (490, 5432), (560, 4753), (679, 3920), (686, 3880), (776, 3430), (784, 3395), (970, 2744), (980, 2716), (1358, 1960), (1372, 1940), (1552, 1715)]