20778296

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:492

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 28469704

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 89, 154, 178, 308, 356, 379, 616, 623, 712, 758, 979, 1246, 1516, 1958, 2492, 2653, 3032, 3916, 4169, 4984, 5306, 6853, 7832, 8338, 10612, 13706, 16676, 21224, 27412, 29183, 33352, 33731, 54824, 58366, 67462, 116732, 134924, 233464, 236117, 269848, 371041, 472234, 742082, 944468, 1484164, 1888936, 2597287, 2968328, 5194574, 10389148, 20778296]

約数ペア:

[(1, 20778296), (2, 10389148), (4, 5194574), (7, 2968328), (8, 2597287), (11, 1888936), (14, 1484164), (22, 944468), (28, 742082), (44, 472234), (56, 371041), (77, 269848), (88, 236117), (89, 233464), (154, 134924), (178, 116732), (308, 67462), (356, 58366), (379, 54824), (616, 33731), (623, 33352), (712, 29183), (758, 27412), (979, 21224), (1246, 16676), (1516, 13706), (1958, 10612), (2492, 8338), (2653, 7832), (3032, 6853), (3916, 5306), (4169, 4984)]