2021067880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{19531}}^1$

素因数の和:19754

約数の個数: 64

約数和(自身を含む): 4922064000

約数和(自身を除く): 2900996120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 199, 260, 398, 520, 796, 995, 1592, 1990, 2587, 3980, 5174, 7960, 10348, 12935, 19531, 20696, 25870, 39062, 51740, 78124, 97655, 103480, 156248, 195310, 253903, 390620, 507806, 781240, 1015612, 1269515, 2031224, 2539030, 3886669, 5078060, 7773338, 10156120, 15546676, 19433345, 31093352, 38866690, 50526697, 77733380, 101053394, 155466760, 202106788, 252633485, 404213576, 505266970, 1010533940, 2021067880]

約数ペア:

[(1, 2021067880), (2, 1010533940), (4, 505266970), (5, 404213576), (8, 252633485), (10, 202106788), (13, 155466760), (20, 101053394), (26, 77733380), (40, 50526697), (52, 38866690), (65, 31093352), (104, 19433345), (130, 15546676), (199, 10156120), (260, 7773338), (398, 5078060), (520, 3886669), (796, 2539030), (995, 2031224), (1592, 1269515), (1990, 1015612), (2587, 781240), (3980, 507806), (5174, 390620), (7960, 253903), (10348, 195310), (12935, 156248), (19531, 103480), (20696, 97655), (25870, 78124), (39062, 51740)]