19779914

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 39536640

約数和(自身を除く): 19756726

約数列:

[1, 2, 7, 11, 14, 22, 29, 43, 58, 77, 86, 103, 154, 203, 206, 301, 319, 406, 473, 602, 638, 721, 946, 1133, 1247, 1442, 2233, 2266, 2494, 2987, 3311, 4429, 4466, 5974, 6622, 7931, 8729, 8858, 13717, 15862, 17458, 20909, 27434, 31003, 32857, 41818, 48719, 62006, 65714, 96019, 97438, 128441, 192038, 229999, 256882, 341033, 459998, 682066, 899087, 1412851, 1798174, 2825702, 9889957, 19779914]

約数ペア:

[(1, 19779914), (2, 9889957), (7, 2825702), (11, 1798174), (14, 1412851), (22, 899087), (29, 682066), (43, 459998), (58, 341033), (77, 256882), (86, 229999), (103, 192038), (154, 128441), (203, 97438), (206, 96019), (301, 65714), (319, 62006), (406, 48719), (473, 41818), (602, 32857), (638, 31003), (721, 27434), (946, 20909), (1133, 17458), (1247, 15862), (1442, 13717), (2233, 8858), (2266, 8729), (2494, 7931), (2987, 6622), (3311, 5974), (4429, 4466)]