18905900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{14543}}^1$

素因数の和:14570

約数の個数: 36

約数和(自身を含む): 44184672

約数和(自身を除く): 25278772

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 14543, 29086, 58172, 72715, 145430, 189059, 290860, 363575, 378118, 727150, 756236, 945295, 1454300, 1890590, 3781180, 4726475, 9452950, 18905900]

約数ペア:

[(1, 18905900), (2, 9452950), (4, 4726475), (5, 3781180), (10, 1890590), (13, 1454300), (20, 945295), (25, 756236), (26, 727150), (50, 378118), (52, 363575), (65, 290860), (100, 189059), (130, 145430), (260, 72715), (325, 58172), (650, 29086), (1300, 14543)]