20418224

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{277}}^1$

素因数の和:573

約数の個数: 40

約数和(自身を含む): 42193728

約数和(自身を除く): 21775504

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 271, 272, 277, 542, 554, 1084, 1108, 2168, 2216, 4336, 4432, 4607, 4709, 9214, 9418, 18428, 18836, 36856, 37672, 73712, 75067, 75344, 150134, 300268, 600536, 1201072, 1276139, 2552278, 5104556, 10209112, 20418224]

約数ペア:

[(1, 20418224), (2, 10209112), (4, 5104556), (8, 2552278), (16, 1276139), (17, 1201072), (34, 600536), (68, 300268), (136, 150134), (271, 75344), (272, 75067), (277, 73712), (542, 37672), (554, 36856), (1084, 18836), (1108, 18428), (2168, 9418), (2216, 9214), (4336, 4709), (4432, 4607)]