20485544

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 43338240

約数和(自身を除く): 22852696

約数列:

[1, 2, 4, 8, 17, 31, 34, 43, 62, 68, 86, 113, 124, 136, 172, 226, 248, 344, 452, 527, 731, 904, 1054, 1333, 1462, 1921, 2108, 2666, 2924, 3503, 3842, 4216, 4859, 5332, 5848, 7006, 7684, 9718, 10664, 14012, 15368, 19436, 22661, 28024, 38872, 45322, 59551, 82603, 90644, 119102, 150629, 165206, 181288, 238204, 301258, 330412, 476408, 602516, 660824, 1205032, 2560693, 5121386, 10242772, 20485544]

約数ペア:

[(1, 20485544), (2, 10242772), (4, 5121386), (8, 2560693), (17, 1205032), (31, 660824), (34, 602516), (43, 476408), (62, 330412), (68, 301258), (86, 238204), (113, 181288), (124, 165206), (136, 150629), (172, 119102), (226, 90644), (248, 82603), (344, 59551), (452, 45322), (527, 38872), (731, 28024), (904, 22661), (1054, 19436), (1333, 15368), (1462, 14012), (1921, 10664), (2108, 9718), (2666, 7684), (2924, 7006), (3503, 5848), (3842, 5332), (4216, 4859)]