28143700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21649}}^1$

素因数の和:21676

約数の個数: 36

約数和(自身を含む): 65772700

約数和(自身を除く): 37629000

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 21649, 43298, 86596, 108245, 216490, 281437, 432980, 541225, 562874, 1082450, 1125748, 1407185, 2164900, 2814370, 5628740, 7035925, 14071850, 28143700]

約数ペア:

[(1, 28143700), (2, 14071850), (4, 7035925), (5, 5628740), (10, 2814370), (13, 2164900), (20, 1407185), (25, 1125748), (26, 1082450), (50, 562874), (52, 541225), (65, 432980), (100, 281437), (130, 216490), (260, 108245), (325, 86596), (650, 43298), (1300, 21649)]