21828720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{4787}}^1$

素因数の和:4822

約数の個数: 80

約数和(自身を含む): 71245440

約数和(自身を除く): 49416720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 95, 114, 120, 152, 190, 228, 240, 285, 304, 380, 456, 570, 760, 912, 1140, 1520, 2280, 4560, 4787, 9574, 14361, 19148, 23935, 28722, 38296, 47870, 57444, 71805, 76592, 90953, 95740, 114888, 143610, 181906, 191480, 229776, 272859, 287220, 363812, 382960, 454765, 545718, 574440, 727624, 909530, 1091436, 1148880, 1364295, 1455248, 1819060, 2182872, 2728590, 3638120, 4365744, 5457180, 7276240, 10914360, 21828720]

約数ペア:

[(1, 21828720), (2, 10914360), (3, 7276240), (4, 5457180), (5, 4365744), (6, 3638120), (8, 2728590), (10, 2182872), (12, 1819060), (15, 1455248), (16, 1364295), (19, 1148880), (20, 1091436), (24, 909530), (30, 727624), (38, 574440), (40, 545718), (48, 454765), (57, 382960), (60, 363812), (76, 287220), (80, 272859), (95, 229776), (114, 191480), (120, 181906), (152, 143610), (190, 114888), (228, 95740), (240, 90953), (285, 76592), (304, 71805), (380, 57444), (456, 47870), (570, 38296), (760, 28722), (912, 23935), (1140, 19148), (1520, 14361), (2280, 9574), (4560, 4787)]