20517966

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{541}}^1$

素因数の和:606

約数の個数: 72

約数和(自身を含む): 53014104

約数和(自身を除く): 32496138

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 43, 49, 63, 86, 98, 126, 129, 147, 258, 294, 301, 387, 441, 541, 602, 774, 882, 903, 1082, 1623, 1806, 2107, 2709, 3246, 3787, 4214, 4869, 5418, 6321, 7574, 9738, 11361, 12642, 18963, 22722, 23263, 26509, 34083, 37926, 46526, 53018, 68166, 69789, 79527, 139578, 159054, 162841, 209367, 238581, 325682, 418734, 477162, 488523, 977046, 1139887, 1465569, 2279774, 2931138, 3419661, 6839322, 10258983, 20517966]

約数ペア:

[(1, 20517966), (2, 10258983), (3, 6839322), (6, 3419661), (7, 2931138), (9, 2279774), (14, 1465569), (18, 1139887), (21, 977046), (42, 488523), (43, 477162), (49, 418734), (63, 325682), (86, 238581), (98, 209367), (126, 162841), (129, 159054), (147, 139578), (258, 79527), (294, 69789), (301, 68166), (387, 53018), (441, 46526), (541, 37926), (602, 34083), (774, 26509), (882, 23263), (903, 22722), (1082, 18963), (1623, 12642), (1806, 11361), (2107, 9738), (2709, 7574), (3246, 6321), (3787, 5418), (4214, 4869)]