20511216

素因数分解:

$2^4\times 3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{563}}^1$

素因数の和:611

約数の個数: 120

約数和(自身を含む): 65460096

約数和(自身を除く): 44948880

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 23, 24, 33, 36, 44, 46, 48, 66, 69, 72, 88, 92, 99, 132, 138, 144, 176, 184, 198, 207, 253, 264, 276, 368, 396, 414, 506, 528, 552, 563, 759, 792, 828, 1012, 1104, 1126, 1518, 1584, 1656, 1689, 2024, 2252, 2277, 3036, 3312, 3378, 4048, 4504, 4554, 5067, 6072, 6193, 6756, 9008, 9108, 10134, 12144, 12386, 12949, 13512, 18216, 18579, 20268, 24772, 25898, 27024, 36432, 37158, 38847, 40536, 49544, 51796, 55737, 74316, 77694, 81072, 99088, 103592, 111474, 116541, 142439, 148632, 155388, 207184, 222948, 233082, 284878, 297264, 310776, 427317, 445896, 466164, 569756, 621552, 854634, 891792, 932328, 1139512, 1281951, 1709268, 1864656, 2279024, 2563902, 3418536, 5127804, 6837072, 10255608, 20511216]

約数ペア:

[(1, 20511216), (2, 10255608), (3, 6837072), (4, 5127804), (6, 3418536), (8, 2563902), (9, 2279024), (11, 1864656), (12, 1709268), (16, 1281951), (18, 1139512), (22, 932328), (23, 891792), (24, 854634), (33, 621552), (36, 569756), (44, 466164), (46, 445896), (48, 427317), (66, 310776), (69, 297264), (72, 284878), (88, 233082), (92, 222948), (99, 207184), (132, 155388), (138, 148632), (144, 142439), (176, 116541), (184, 111474), (198, 103592), (207, 99088), (253, 81072), (264, 77694), (276, 74316), (368, 55737), (396, 51796), (414, 49544), (506, 40536), (528, 38847), (552, 37158), (563, 36432), (759, 27024), (792, 25898), (828, 24772), (1012, 20268), (1104, 18579), (1126, 18216), (1518, 13512), (1584, 12949), (1656, 12386), (1689, 12144), (2024, 10134), (2252, 9108), (2277, 9008), (3036, 6756), (3312, 6193), (3378, 6072), (4048, 5067), (4504, 4554)]