1781220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{4241}}^1$

素因数の和:4260

約数の個数: 48

約数和(自身を含む): 5701248

約数和(自身を除く): 3920028

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 4241, 8482, 12723, 16964, 21205, 25446, 29687, 42410, 50892, 59374, 63615, 84820, 89061, 118748, 127230, 148435, 178122, 254460, 296870, 356244, 445305, 593740, 890610, 1781220]

約数ペア:

[(1, 1781220), (2, 890610), (3, 593740), (4, 445305), (5, 356244), (6, 296870), (7, 254460), (10, 178122), (12, 148435), (14, 127230), (15, 118748), (20, 89061), (21, 84820), (28, 63615), (30, 59374), (35, 50892), (42, 42410), (60, 29687), (70, 25446), (84, 21205), (105, 16964), (140, 12723), (210, 8482), (420, 4241)]