21095480

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:301

約数の個数: 96

約数和(自身を含む): 56635200

約数和(自身を除く): 35539720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 49, 56, 70, 94, 98, 140, 188, 196, 229, 235, 245, 280, 329, 376, 392, 458, 470, 490, 658, 916, 940, 980, 1145, 1316, 1603, 1645, 1832, 1880, 1960, 2290, 2303, 2632, 3206, 3290, 4580, 4606, 6412, 6580, 8015, 9160, 9212, 10763, 11221, 11515, 12824, 13160, 16030, 18424, 21526, 22442, 23030, 32060, 43052, 44884, 46060, 53815, 56105, 64120, 75341, 86104, 89768, 92120, 107630, 112210, 150682, 215260, 224420, 301364, 376705, 430520, 448840, 527387, 602728, 753410, 1054774, 1506820, 2109548, 2636935, 3013640, 4219096, 5273870, 10547740, 21095480]

約数ペア:

[(1, 21095480), (2, 10547740), (4, 5273870), (5, 4219096), (7, 3013640), (8, 2636935), (10, 2109548), (14, 1506820), (20, 1054774), (28, 753410), (35, 602728), (40, 527387), (47, 448840), (49, 430520), (56, 376705), (70, 301364), (94, 224420), (98, 215260), (140, 150682), (188, 112210), (196, 107630), (229, 92120), (235, 89768), (245, 86104), (280, 75341), (329, 64120), (376, 56105), (392, 53815), (458, 46060), (470, 44884), (490, 43052), (658, 32060), (916, 23030), (940, 22442), (980, 21526), (1145, 18424), (1316, 16030), (1603, 13160), (1645, 12824), (1832, 11515), (1880, 11221), (1960, 10763), (2290, 9212), (2303, 9160), (2632, 8015), (3206, 6580), (3290, 6412), (4580, 4606)]