27120980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{479}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 60480000

約数和(自身を除く): 33359020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 149, 190, 298, 380, 479, 596, 745, 958, 1490, 1916, 2395, 2831, 2980, 4790, 5662, 9101, 9580, 11324, 14155, 18202, 28310, 36404, 45505, 56620, 71371, 91010, 142742, 182020, 285484, 356855, 713710, 1356049, 1427420, 2712098, 5424196, 6780245, 13560490, 27120980]

約数ペア:

[(1, 27120980), (2, 13560490), (4, 6780245), (5, 5424196), (10, 2712098), (19, 1427420), (20, 1356049), (38, 713710), (76, 356855), (95, 285484), (149, 182020), (190, 142742), (298, 91010), (380, 71371), (479, 56620), (596, 45505), (745, 36404), (958, 28310), (1490, 18202), (1916, 14155), (2395, 11324), (2831, 9580), (2980, 9101), (4790, 5662)]