20180300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{227}}^1$

素因数の和:375

約数の個数: 72

約数和(自身を含む): 50663424

約数和(自身を除く): 30483124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 127, 140, 175, 227, 254, 350, 454, 508, 635, 700, 889, 908, 1135, 1270, 1589, 1778, 2270, 2540, 3175, 3178, 3556, 4445, 4540, 5675, 6350, 6356, 7945, 8890, 11350, 12700, 15890, 17780, 22225, 22700, 28829, 31780, 39725, 44450, 57658, 79450, 88900, 115316, 144145, 158900, 201803, 288290, 403606, 576580, 720725, 807212, 1009015, 1441450, 2018030, 2882900, 4036060, 5045075, 10090150, 20180300]

約数ペア:

[(1, 20180300), (2, 10090150), (4, 5045075), (5, 4036060), (7, 2882900), (10, 2018030), (14, 1441450), (20, 1009015), (25, 807212), (28, 720725), (35, 576580), (50, 403606), (70, 288290), (100, 201803), (127, 158900), (140, 144145), (175, 115316), (227, 88900), (254, 79450), (350, 57658), (454, 44450), (508, 39725), (635, 31780), (700, 28829), (889, 22700), (908, 22225), (1135, 17780), (1270, 15890), (1589, 12700), (1778, 11350), (2270, 8890), (2540, 7945), (3175, 6356), (3178, 6350), (3556, 5675), (4445, 4540)]