20424976

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:224

約数の個数: 80

約数和(自身を含む): 47496960

約数和(自身を除く): 27071984

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 79, 88, 104, 113, 143, 158, 176, 208, 226, 286, 316, 452, 572, 632, 869, 904, 1027, 1144, 1243, 1264, 1469, 1738, 1808, 2054, 2288, 2486, 2938, 3476, 4108, 4972, 5876, 6952, 8216, 8927, 9944, 11297, 11752, 13904, 16159, 16432, 17854, 19888, 22594, 23504, 32318, 35708, 45188, 64636, 71416, 90376, 98197, 116051, 129272, 142832, 180752, 196394, 232102, 258544, 392788, 464204, 785576, 928408, 1276561, 1571152, 1856816, 2553122, 5106244, 10212488, 20424976]

約数ペア:

[(1, 20424976), (2, 10212488), (4, 5106244), (8, 2553122), (11, 1856816), (13, 1571152), (16, 1276561), (22, 928408), (26, 785576), (44, 464204), (52, 392788), (79, 258544), (88, 232102), (104, 196394), (113, 180752), (143, 142832), (158, 129272), (176, 116051), (208, 98197), (226, 90376), (286, 71416), (316, 64636), (452, 45188), (572, 35708), (632, 32318), (869, 23504), (904, 22594), (1027, 19888), (1144, 17854), (1243, 16432), (1264, 16159), (1469, 13904), (1738, 11752), (1808, 11297), (2054, 9944), (2288, 8927), (2486, 8216), (2938, 6952), (3476, 5876), (4108, 4972)]