20689830

素因数分解:

$2^1\times 3^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:156

約数の個数: 160

約数和(自身を含む): 65862720

約数和(自身を除く): 45172890

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 41, 42, 45, 54, 63, 70, 81, 82, 89, 90, 105, 123, 126, 135, 162, 178, 189, 205, 210, 246, 267, 270, 287, 315, 369, 378, 405, 410, 445, 534, 567, 574, 615, 623, 630, 738, 801, 810, 861, 890, 945, 1107, 1134, 1230, 1246, 1335, 1435, 1602, 1722, 1845, 1869, 1890, 2214, 2403, 2583, 2670, 2835, 2870, 3115, 3321, 3649, 3690, 3738, 4005, 4305, 4806, 5166, 5535, 5607, 5670, 6230, 6642, 7209, 7298, 7749, 8010, 8610, 9345, 10947, 11070, 11214, 12015, 12915, 14418, 15498, 16605, 16821, 18245, 18690, 21894, 23247, 24030, 25543, 25830, 28035, 32841, 33210, 33642, 36045, 36490, 38745, 46494, 50463, 51086, 54735, 56070, 65682, 72090, 76629, 77490, 84105, 98523, 100926, 109470, 116235, 127715, 153258, 164205, 168210, 197046, 229887, 232470, 252315, 255430, 295569, 328410, 383145, 459774, 492615, 504630, 591138, 689661, 766290, 985230, 1149435, 1379322, 1477845, 2068983, 2298870, 2955690, 3448305, 4137966, 6896610, 10344915, 20689830]

約数ペア:

[(1, 20689830), (2, 10344915), (3, 6896610), (5, 4137966), (6, 3448305), (7, 2955690), (9, 2298870), (10, 2068983), (14, 1477845), (15, 1379322), (18, 1149435), (21, 985230), (27, 766290), (30, 689661), (35, 591138), (41, 504630), (42, 492615), (45, 459774), (54, 383145), (63, 328410), (70, 295569), (81, 255430), (82, 252315), (89, 232470), (90, 229887), (105, 197046), (123, 168210), (126, 164205), (135, 153258), (162, 127715), (178, 116235), (189, 109470), (205, 100926), (210, 98523), (246, 84105), (267, 77490), (270, 76629), (287, 72090), (315, 65682), (369, 56070), (378, 54735), (405, 51086), (410, 50463), (445, 46494), (534, 38745), (567, 36490), (574, 36045), (615, 33642), (623, 33210), (630, 32841), (738, 28035), (801, 25830), (810, 25543), (861, 24030), (890, 23247), (945, 21894), (1107, 18690), (1134, 18245), (1230, 16821), (1246, 16605), (1335, 15498), (1435, 14418), (1602, 12915), (1722, 12015), (1845, 11214), (1869, 11070), (1890, 10947), (2214, 9345), (2403, 8610), (2583, 8010), (2670, 7749), (2835, 7298), (2870, 7209), (3115, 6642), (3321, 6230), (3649, 5670), (3690, 5607), (3738, 5535), (4005, 5166), (4305, 4806)]