19564336

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1249}}^1$

素因数の和:1357

約数の個数: 40

約数和(自身を含む): 41850000

約数和(自身を除く): 22285664

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 89, 176, 178, 356, 712, 979, 1249, 1424, 1958, 2498, 3916, 4996, 7832, 9992, 13739, 15664, 19984, 27478, 54956, 109912, 111161, 219824, 222322, 444644, 889288, 1222771, 1778576, 2445542, 4891084, 9782168, 19564336]

約数ペア:

[(1, 19564336), (2, 9782168), (4, 4891084), (8, 2445542), (11, 1778576), (16, 1222771), (22, 889288), (44, 444644), (88, 222322), (89, 219824), (176, 111161), (178, 109912), (356, 54956), (712, 27478), (979, 19984), (1249, 15664), (1424, 13739), (1958, 9992), (2498, 7832), (3916, 4996)]