28281820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{28859}}^1$

素因数の和:28882

約数の個数: 36

約数和(自身を含む): 69090840

約数和(自身を除く): 40809020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 28859, 57718, 115436, 144295, 202013, 288590, 404026, 577180, 808052, 1010065, 1414091, 2020130, 2828182, 4040260, 5656364, 7070455, 14140910, 28281820]

約数ペア:

[(1, 28281820), (2, 14140910), (4, 7070455), (5, 5656364), (7, 4040260), (10, 2828182), (14, 2020130), (20, 1414091), (28, 1010065), (35, 808052), (49, 577180), (70, 404026), (98, 288590), (140, 202013), (196, 144295), (245, 115436), (490, 57718), (980, 28859)]