18911344

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{277}}^1$

素因数の和:553

約数の個数: 40

約数和(自身を含む): 39091248

約数和(自身を除く): 20179904

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 251, 272, 277, 502, 554, 1004, 1108, 2008, 2216, 4016, 4267, 4432, 4709, 8534, 9418, 17068, 18836, 34136, 37672, 68272, 69527, 75344, 139054, 278108, 556216, 1112432, 1181959, 2363918, 4727836, 9455672, 18911344]

約数ペア:

[(1, 18911344), (2, 9455672), (4, 4727836), (8, 2363918), (16, 1181959), (17, 1112432), (34, 556216), (68, 278108), (136, 139054), (251, 75344), (272, 69527), (277, 68272), (502, 37672), (554, 34136), (1004, 18836), (1108, 17068), (2008, 9418), (2216, 8534), (4016, 4709), (4267, 4432)]