20541960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1327}}^1$

素因数の和:1387

約数の個数: 96

約数和(自身を含む): 68365440

約数和(自身を除く): 47823480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 43, 45, 60, 72, 86, 90, 120, 129, 172, 180, 215, 258, 344, 360, 387, 430, 516, 645, 774, 860, 1032, 1290, 1327, 1548, 1720, 1935, 2580, 2654, 3096, 3870, 3981, 5160, 5308, 6635, 7740, 7962, 10616, 11943, 13270, 15480, 15924, 19905, 23886, 26540, 31848, 39810, 47772, 53080, 57061, 59715, 79620, 95544, 114122, 119430, 159240, 171183, 228244, 238860, 285305, 342366, 456488, 477720, 513549, 570610, 684732, 855915, 1027098, 1141220, 1369464, 1711830, 2054196, 2282440, 2567745, 3423660, 4108392, 5135490, 6847320, 10270980, 20541960]

約数ペア:

[(1, 20541960), (2, 10270980), (3, 6847320), (4, 5135490), (5, 4108392), (6, 3423660), (8, 2567745), (9, 2282440), (10, 2054196), (12, 1711830), (15, 1369464), (18, 1141220), (20, 1027098), (24, 855915), (30, 684732), (36, 570610), (40, 513549), (43, 477720), (45, 456488), (60, 342366), (72, 285305), (86, 238860), (90, 228244), (120, 171183), (129, 159240), (172, 119430), (180, 114122), (215, 95544), (258, 79620), (344, 59715), (360, 57061), (387, 53080), (430, 47772), (516, 39810), (645, 31848), (774, 26540), (860, 23886), (1032, 19905), (1290, 15924), (1327, 15480), (1548, 13270), (1720, 11943), (1935, 10616), (2580, 7962), (2654, 7740), (3096, 6635), (3870, 5308), (3981, 5160)]