28675940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1$

素因数の和:261

約数の個数: 96

約数和(自身を含む): 70398720

約数和(自身を除く): 41722780

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 23, 34, 38, 46, 68, 76, 85, 92, 95, 115, 170, 190, 193, 230, 323, 340, 380, 386, 391, 437, 460, 646, 772, 782, 874, 965, 1292, 1564, 1615, 1748, 1930, 1955, 2185, 3230, 3281, 3667, 3860, 3910, 4370, 4439, 6460, 6562, 7334, 7429, 7820, 8740, 8878, 13124, 14668, 14858, 16405, 17756, 18335, 22195, 29716, 32810, 36670, 37145, 44390, 62339, 65620, 73340, 74290, 75463, 84341, 88780, 124678, 148580, 150926, 168682, 249356, 301852, 311695, 337364, 377315, 421705, 623390, 754630, 843410, 1246780, 1433797, 1509260, 1686820, 2867594, 5735188, 7168985, 14337970, 28675940]

約数ペア:

[(1, 28675940), (2, 14337970), (4, 7168985), (5, 5735188), (10, 2867594), (17, 1686820), (19, 1509260), (20, 1433797), (23, 1246780), (34, 843410), (38, 754630), (46, 623390), (68, 421705), (76, 377315), (85, 337364), (92, 311695), (95, 301852), (115, 249356), (170, 168682), (190, 150926), (193, 148580), (230, 124678), (323, 88780), (340, 84341), (380, 75463), (386, 74290), (391, 73340), (437, 65620), (460, 62339), (646, 44390), (772, 37145), (782, 36670), (874, 32810), (965, 29716), (1292, 22195), (1564, 18335), (1615, 17756), (1748, 16405), (1930, 14858), (1955, 14668), (2185, 13124), (3230, 8878), (3281, 8740), (3667, 7820), (3860, 7429), (3910, 7334), (4370, 6562), (4439, 6460)]