28735600

素因数分解:

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

素因数の和:255

約数の個数: 90

約数和(自身を含む): 73228200

約数和(自身を除く): 44492600

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 199, 200, 304, 361, 380, 398, 400, 475, 722, 760, 796, 950, 995, 1444, 1520, 1592, 1805, 1900, 1990, 2888, 3184, 3610, 3781, 3800, 3980, 4975, 5776, 7220, 7562, 7600, 7960, 9025, 9950, 14440, 15124, 15920, 18050, 18905, 19900, 28880, 30248, 36100, 37810, 39800, 60496, 71839, 72200, 75620, 79600, 94525, 143678, 144400, 151240, 189050, 287356, 302480, 359195, 378100, 574712, 718390, 756200, 1149424, 1436780, 1512400, 1795975, 2873560, 3591950, 5747120, 7183900, 14367800, 28735600]

約数ペア:

[(1, 28735600), (2, 14367800), (4, 7183900), (5, 5747120), (8, 3591950), (10, 2873560), (16, 1795975), (19, 1512400), (20, 1436780), (25, 1149424), (38, 756200), (40, 718390), (50, 574712), (76, 378100), (80, 359195), (95, 302480), (100, 287356), (152, 189050), (190, 151240), (199, 144400), (200, 143678), (304, 94525), (361, 79600), (380, 75620), (398, 72200), (400, 71839), (475, 60496), (722, 39800), (760, 37810), (796, 36100), (950, 30248), (995, 28880), (1444, 19900), (1520, 18905), (1592, 18050), (1805, 15920), (1900, 15124), (1990, 14440), (2888, 9950), (3184, 9025), (3610, 7960), (3781, 7600), (3800, 7562), (3980, 7220), (4975, 5776)]