217483120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{719}}^1$

素因数の和:950

約数の個数: 80

約数和(自身を含む): 535680000

約数和(自身を除く): 318196880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 199, 304, 380, 398, 719, 760, 796, 995, 1438, 1520, 1592, 1990, 2876, 3184, 3595, 3781, 3980, 5752, 7190, 7562, 7960, 11504, 13661, 14380, 15124, 15920, 18905, 27322, 28760, 30248, 37810, 54644, 57520, 60496, 68305, 75620, 109288, 136610, 143081, 151240, 218576, 273220, 286162, 302480, 546440, 572324, 715405, 1092880, 1144648, 1430810, 2289296, 2718539, 2861620, 5437078, 5723240, 10874156, 11446480, 13592695, 21748312, 27185390, 43496624, 54370780, 108741560, 217483120]

約数ペア:

[(1, 217483120), (2, 108741560), (4, 54370780), (5, 43496624), (8, 27185390), (10, 21748312), (16, 13592695), (19, 11446480), (20, 10874156), (38, 5723240), (40, 5437078), (76, 2861620), (80, 2718539), (95, 2289296), (152, 1430810), (190, 1144648), (199, 1092880), (304, 715405), (380, 572324), (398, 546440), (719, 302480), (760, 286162), (796, 273220), (995, 218576), (1438, 151240), (1520, 143081), (1592, 136610), (1990, 109288), (2876, 75620), (3184, 68305), (3595, 60496), (3781, 57520), (3980, 54644), (5752, 37810), (7190, 30248), (7562, 28760), (7960, 27322), (11504, 18905), (13661, 15920), (14380, 15124)]