18898672

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2113}}^1$

素因数の和:2177

約数の個数: 40

約数和(自身を含む): 40368944

約数和(自身を除く): 21470272

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 172, 208, 344, 559, 688, 1118, 2113, 2236, 4226, 4472, 8452, 8944, 16904, 27469, 33808, 54938, 90859, 109876, 181718, 219752, 363436, 439504, 726872, 1181167, 1453744, 2362334, 4724668, 9449336, 18898672]

約数ペア:

[(1, 18898672), (2, 9449336), (4, 4724668), (8, 2362334), (13, 1453744), (16, 1181167), (26, 726872), (43, 439504), (52, 363436), (86, 219752), (104, 181718), (172, 109876), (208, 90859), (344, 54938), (559, 33808), (688, 27469), (1118, 16904), (2113, 8944), (2236, 8452), (4226, 4472)]