20665216

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1129}}^1$

素因数の和:1167

約数の個数: 64

約数和(自身を含む): 48409200

約数和(自身を除く): 27743984

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 64, 88, 104, 128, 143, 176, 208, 286, 352, 416, 572, 704, 832, 1129, 1144, 1408, 1664, 2258, 2288, 4516, 4576, 9032, 9152, 12419, 14677, 18064, 18304, 24838, 29354, 36128, 49676, 58708, 72256, 99352, 117416, 144512, 161447, 198704, 234832, 322894, 397408, 469664, 645788, 794816, 939328, 1291576, 1589632, 1878656, 2583152, 5166304, 10332608, 20665216]

約数ペア:

[(1, 20665216), (2, 10332608), (4, 5166304), (8, 2583152), (11, 1878656), (13, 1589632), (16, 1291576), (22, 939328), (26, 794816), (32, 645788), (44, 469664), (52, 397408), (64, 322894), (88, 234832), (104, 198704), (128, 161447), (143, 144512), (176, 117416), (208, 99352), (286, 72256), (352, 58708), (416, 49676), (572, 36128), (704, 29354), (832, 24838), (1129, 18304), (1144, 18064), (1408, 14677), (1664, 12419), (2258, 9152), (2288, 9032), (4516, 4576)]