263881660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{293}}^1\times {\mathrm{919}}^1$

素因数の和:1235

約数の個数: 72

約数和(自身を含む): 647529120

約数和(自身を除く): 383647460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 293, 490, 586, 919, 980, 1172, 1465, 1838, 2051, 2930, 3676, 4102, 4595, 5860, 6433, 8204, 9190, 10255, 12866, 14357, 18380, 20510, 25732, 28714, 32165, 41020, 45031, 57428, 64330, 71785, 90062, 128660, 143570, 180124, 225155, 269267, 287140, 450310, 538534, 900620, 1077068, 1346335, 1884869, 2692670, 3769738, 5385340, 7539476, 9424345, 13194083, 18848690, 26388166, 37697380, 52776332, 65970415, 131940830, 263881660]

約数ペア:

[(1, 263881660), (2, 131940830), (4, 65970415), (5, 52776332), (7, 37697380), (10, 26388166), (14, 18848690), (20, 13194083), (28, 9424345), (35, 7539476), (49, 5385340), (70, 3769738), (98, 2692670), (140, 1884869), (196, 1346335), (245, 1077068), (293, 900620), (490, 538534), (586, 450310), (919, 287140), (980, 269267), (1172, 225155), (1465, 180124), (1838, 143570), (2051, 128660), (2930, 90062), (3676, 71785), (4102, 64330), (4595, 57428), (5860, 45031), (6433, 41020), (8204, 32165), (9190, 28714), (10255, 25732), (12866, 20510), (14357, 18380)]