990780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{337}}^1$

素因数の和:363

約数の個数: 72

約数和(自身を含む): 3236688

約数和(自身を除く): 2245908

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 337, 420, 490, 588, 674, 735, 980, 1011, 1348, 1470, 1685, 2022, 2359, 2940, 3370, 4044, 4718, 5055, 6740, 7077, 9436, 10110, 11795, 14154, 16513, 20220, 23590, 28308, 33026, 35385, 47180, 49539, 66052, 70770, 82565, 99078, 141540, 165130, 198156, 247695, 330260, 495390, 990780]

約数ペア:

[(1, 990780), (2, 495390), (3, 330260), (4, 247695), (5, 198156), (6, 165130), (7, 141540), (10, 99078), (12, 82565), (14, 70770), (15, 66052), (20, 49539), (21, 47180), (28, 35385), (30, 33026), (35, 28308), (42, 23590), (49, 20220), (60, 16513), (70, 14154), (84, 11795), (98, 10110), (105, 9436), (140, 7077), (147, 6740), (196, 5055), (210, 4718), (245, 4044), (294, 3370), (337, 2940), (420, 2359), (490, 2022), (588, 1685), (674, 1470), (735, 1348), (980, 1011)]