256511760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{331}}^1\times {\mathrm{3229}}^1$

素因数の和:3576

約数の個数: 80

約数和(自身を含む): 797835840

約数和(自身を除く): 541324080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 331, 662, 993, 1324, 1655, 1986, 2648, 3229, 3310, 3972, 4965, 5296, 6458, 6620, 7944, 9687, 9930, 12916, 13240, 15888, 16145, 19374, 19860, 25832, 26480, 32290, 38748, 39720, 48435, 51664, 64580, 77496, 79440, 96870, 129160, 154992, 193740, 258320, 387480, 774960, 1068799, 2137598, 3206397, 4275196, 5343995, 6412794, 8550392, 10687990, 12825588, 16031985, 17100784, 21375980, 25651176, 32063970, 42751960, 51302352, 64127940, 85503920, 128255880, 256511760]

約数ペア:

[(1, 256511760), (2, 128255880), (3, 85503920), (4, 64127940), (5, 51302352), (6, 42751960), (8, 32063970), (10, 25651176), (12, 21375980), (15, 17100784), (16, 16031985), (20, 12825588), (24, 10687990), (30, 8550392), (40, 6412794), (48, 5343995), (60, 4275196), (80, 3206397), (120, 2137598), (240, 1068799), (331, 774960), (662, 387480), (993, 258320), (1324, 193740), (1655, 154992), (1986, 129160), (2648, 96870), (3229, 79440), (3310, 77496), (3972, 64580), (4965, 51664), (5296, 48435), (6458, 39720), (6620, 38748), (7944, 32290), (9687, 26480), (9930, 25832), (12916, 19860), (13240, 19374), (15888, 16145)]