66885890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 133920000

約数和(自身を除く): 67034110

約数列:

[1, 2, 5, 10, 19, 29, 38, 58, 61, 95, 122, 145, 190, 199, 290, 305, 398, 551, 610, 995, 1102, 1159, 1769, 1990, 2318, 2755, 3538, 3781, 5510, 5771, 5795, 7562, 8845, 11542, 11590, 12139, 17690, 18905, 24278, 28855, 33611, 37810, 57710, 60695, 67222, 109649, 121390, 168055, 219298, 230641, 336110, 352031, 461282, 548245, 704062, 1096490, 1153205, 1760155, 2306410, 3520310, 6688589, 13377178, 33442945, 66885890]

約数ペア:

[(1, 66885890), (2, 33442945), (5, 13377178), (10, 6688589), (19, 3520310), (29, 2306410), (38, 1760155), (58, 1153205), (61, 1096490), (95, 704062), (122, 548245), (145, 461282), (190, 352031), (199, 336110), (290, 230641), (305, 219298), (398, 168055), (551, 121390), (610, 109649), (995, 67222), (1102, 60695), (1159, 57710), (1769, 37810), (1990, 33611), (2318, 28855), (2755, 24278), (3538, 18905), (3781, 17690), (5510, 12139), (5771, 11590), (5795, 11542), (7562, 8845)]