28974380

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{13291}}^1$

素因数の和:13409

約数の個数: 24

約数和(自身を含む): 61409040

約数和(自身を除く): 32434660

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 13291, 26582, 53164, 66455, 132910, 265820, 1448719, 2897438, 5794876, 7243595, 14487190, 28974380]

約数ペア:

[(1, 28974380), (2, 14487190), (4, 7243595), (5, 5794876), (10, 2897438), (20, 1448719), (109, 265820), (218, 132910), (436, 66455), (545, 53164), (1090, 26582), (2180, 13291)]