1279849900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{9281}}^1$

素因数の和:9499

約数の個数: 72

約数和(自身を含む): 3190483296

約数和(自身を除く): 1910633396

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 197, 350, 394, 700, 788, 985, 1379, 1970, 2758, 3940, 4925, 5516, 6895, 9281, 9850, 13790, 18562, 19700, 27580, 34475, 37124, 46405, 64967, 68950, 92810, 129934, 137900, 185620, 232025, 259868, 324835, 464050, 649670, 928100, 1299340, 1624175, 1828357, 3248350, 3656714, 6496700, 7313428, 9141785, 12798499, 18283570, 25596998, 36567140, 45708925, 51193996, 63992495, 91417850, 127984990, 182835700, 255969980, 319962475, 639924950, 1279849900]

約数ペア:

[(1, 1279849900), (2, 639924950), (4, 319962475), (5, 255969980), (7, 182835700), (10, 127984990), (14, 91417850), (20, 63992495), (25, 51193996), (28, 45708925), (35, 36567140), (50, 25596998), (70, 18283570), (100, 12798499), (140, 9141785), (175, 7313428), (197, 6496700), (350, 3656714), (394, 3248350), (700, 1828357), (788, 1624175), (985, 1299340), (1379, 928100), (1970, 649670), (2758, 464050), (3940, 324835), (4925, 259868), (5516, 232025), (6895, 185620), (9281, 137900), (9850, 129934), (13790, 92810), (18562, 68950), (19700, 64967), (27580, 46405), (34475, 37124)]