18778384

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{277}}^1$

素因数の和:527

約数の個数: 40

約数和(自身を含む): 38608640

約数和(自身を除く): 19830256

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 223, 277, 304, 446, 554, 892, 1108, 1784, 2216, 3568, 4237, 4432, 5263, 8474, 10526, 16948, 21052, 33896, 42104, 61771, 67792, 84208, 123542, 247084, 494168, 988336, 1173649, 2347298, 4694596, 9389192, 18778384]

約数ペア:

[(1, 18778384), (2, 9389192), (4, 4694596), (8, 2347298), (16, 1173649), (19, 988336), (38, 494168), (76, 247084), (152, 123542), (223, 84208), (277, 67792), (304, 61771), (446, 42104), (554, 33896), (892, 21052), (1108, 16948), (1784, 10526), (2216, 8474), (3568, 5263), (4237, 4432)]