20287568

素因数分解:

$2^4\times 7^2\times {\mathrm{113}}^1\times {\mathrm{229}}^1$

素因数の和:364

約数の個数: 60

約数和(自身を含む): 46330740

約数和(自身を除く): 26043172

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 113, 196, 226, 229, 392, 452, 458, 784, 791, 904, 916, 1582, 1603, 1808, 1832, 3164, 3206, 3664, 5537, 6328, 6412, 11074, 11221, 12656, 12824, 22148, 22442, 25648, 25877, 44296, 44884, 51754, 88592, 89768, 103508, 179536, 181139, 207016, 362278, 414032, 724556, 1267973, 1449112, 2535946, 2898224, 5071892, 10143784, 20287568]

約数ペア:

[(1, 20287568), (2, 10143784), (4, 5071892), (7, 2898224), (8, 2535946), (14, 1449112), (16, 1267973), (28, 724556), (49, 414032), (56, 362278), (98, 207016), (112, 181139), (113, 179536), (196, 103508), (226, 89768), (229, 88592), (392, 51754), (452, 44884), (458, 44296), (784, 25877), (791, 25648), (904, 22442), (916, 22148), (1582, 12824), (1603, 12656), (1808, 11221), (1832, 11074), (3164, 6412), (3206, 6328), (3664, 5537)]