9781850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:275

約数の個数: 48

約数和(自身を含む): 19920600

約数和(自身を除く): 10138750

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 101, 130, 149, 202, 298, 325, 505, 650, 745, 1010, 1313, 1490, 1937, 2525, 2626, 3725, 3874, 5050, 6565, 7450, 9685, 13130, 15049, 19370, 30098, 32825, 48425, 65650, 75245, 96850, 150490, 195637, 376225, 391274, 752450, 978185, 1956370, 4890925, 9781850]

約数ペア:

[(1, 9781850), (2, 4890925), (5, 1956370), (10, 978185), (13, 752450), (25, 391274), (26, 376225), (50, 195637), (65, 150490), (101, 96850), (130, 75245), (149, 65650), (202, 48425), (298, 32825), (325, 30098), (505, 19370), (650, 15049), (745, 13130), (1010, 9685), (1313, 7450), (1490, 6565), (1937, 5050), (2525, 3874), (2626, 3725)]