12768980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{409}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 30858240

約数和(自身を除く): 18089260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 409, 446, 818, 892, 1115, 1561, 1636, 2045, 2230, 2863, 3122, 4090, 4460, 5726, 6244, 7805, 8180, 11452, 14315, 15610, 28630, 31220, 57260, 91207, 182414, 364828, 456035, 638449, 912070, 1276898, 1824140, 2553796, 3192245, 6384490, 12768980]

約数ペア:

[(1, 12768980), (2, 6384490), (4, 3192245), (5, 2553796), (7, 1824140), (10, 1276898), (14, 912070), (20, 638449), (28, 456035), (35, 364828), (70, 182414), (140, 91207), (223, 57260), (409, 31220), (446, 28630), (818, 15610), (892, 14315), (1115, 11452), (1561, 8180), (1636, 7805), (2045, 6244), (2230, 5726), (2863, 4460), (3122, 4090)]