18481820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{18859}}^1$

素因数の和:18882

約数の個数: 36

約数和(自身を含む): 45150840

約数和(自身を除く): 26669020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 18859, 37718, 75436, 94295, 132013, 188590, 264026, 377180, 528052, 660065, 924091, 1320130, 1848182, 2640260, 3696364, 4620455, 9240910, 18481820]

約数ペア:

[(1, 18481820), (2, 9240910), (4, 4620455), (5, 3696364), (7, 2640260), (10, 1848182), (14, 1320130), (20, 924091), (28, 660065), (35, 528052), (49, 377180), (70, 264026), (98, 188590), (140, 132013), (196, 94295), (245, 75436), (490, 37718), (980, 18859)]