20005050

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{10259}}^1$

素因数の和:10287

約数の個数: 48

約数和(自身を含む): 53434080

約数和(自身を除く): 33429030

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 195, 325, 390, 650, 975, 1950, 10259, 20518, 30777, 51295, 61554, 102590, 133367, 153885, 256475, 266734, 307770, 400101, 512950, 666835, 769425, 800202, 1333670, 1538850, 2000505, 3334175, 4001010, 6668350, 10002525, 20005050]

約数ペア:

[(1, 20005050), (2, 10002525), (3, 6668350), (5, 4001010), (6, 3334175), (10, 2000505), (13, 1538850), (15, 1333670), (25, 800202), (26, 769425), (30, 666835), (39, 512950), (50, 400101), (65, 307770), (75, 266734), (78, 256475), (130, 153885), (150, 133367), (195, 102590), (325, 61554), (390, 51295), (650, 30777), (975, 20518), (1950, 10259)]