1242640

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{317}}^1$

素因数の和:344

約数の個数: 60

約数和(自身を含む): 3371436

約数和(自身を除く): 2128796

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 317, 392, 490, 560, 634, 784, 980, 1268, 1585, 1960, 2219, 2536, 3170, 3920, 4438, 5072, 6340, 8876, 11095, 12680, 15533, 17752, 22190, 25360, 31066, 35504, 44380, 62132, 77665, 88760, 124264, 155330, 177520, 248528, 310660, 621320, 1242640]

約数ペア:

[(1, 1242640), (2, 621320), (4, 310660), (5, 248528), (7, 177520), (8, 155330), (10, 124264), (14, 88760), (16, 77665), (20, 62132), (28, 44380), (35, 35504), (40, 31066), (49, 25360), (56, 22190), (70, 17752), (80, 15533), (98, 12680), (112, 11095), (140, 8876), (196, 6340), (245, 5072), (280, 4438), (317, 3920), (392, 3170), (490, 2536), (560, 2219), (634, 1960), (784, 1585), (980, 1268)]