18743571

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:121

約数の個数: 96

約数和(自身を含む): 37559808

約数和(自身を除く): 18816237

約数列:

[1, 3, 7, 9, 11, 17, 21, 33, 37, 43, 51, 63, 77, 99, 111, 119, 129, 153, 187, 231, 259, 301, 333, 357, 387, 407, 473, 561, 629, 693, 731, 777, 903, 1071, 1221, 1309, 1419, 1591, 1683, 1887, 2193, 2331, 2709, 2849, 3311, 3663, 3927, 4257, 4403, 4773, 5117, 5661, 6579, 6919, 8041, 8547, 9933, 11137, 11781, 13209, 14319, 15351, 17501, 20757, 24123, 25641, 27047, 29799, 33411, 39627, 46053, 48433, 52503, 56287, 62271, 72369, 81141, 100233, 122507, 145299, 157509, 168861, 189329, 243423, 297517, 367521, 435897, 506583, 567987, 892551, 1102563, 1703961, 2082619, 2677653, 6247857, 18743571]

約数ペア:

[(1, 18743571), (3, 6247857), (7, 2677653), (9, 2082619), (11, 1703961), (17, 1102563), (21, 892551), (33, 567987), (37, 506583), (43, 435897), (51, 367521), (63, 297517), (77, 243423), (99, 189329), (111, 168861), (119, 157509), (129, 145299), (153, 122507), (187, 100233), (231, 81141), (259, 72369), (301, 62271), (333, 56287), (357, 52503), (387, 48433), (407, 46053), (473, 39627), (561, 33411), (629, 29799), (693, 27047), (731, 25641), (777, 24123), (903, 20757), (1071, 17501), (1221, 15351), (1309, 14319), (1419, 13209), (1591, 11781), (1683, 11137), (1887, 9933), (2193, 8547), (2331, 8041), (2709, 6919), (2849, 6579), (3311, 5661), (3663, 5117), (3927, 4773), (4257, 4403)]