21409992576

素因数分解:

$2^7\times 3^4\times 7^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:161

約数の個数: 960

約数和(自身を含む): 81802282320

約数和(自身を除く): 60392289744

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 17, 18, 21, 24, 27, 28, 32, 34, 36, 37, 42, 48, 49, 51, 54, 56, 63, 64, 67, 68, 72, 74, 81, 84, 96, 98, 102, 108, 111, 112, 119, 126, 128, 134, 136, 144, 147, 148, 153, 162, 168, 189, 192, 196, 201, 204, 216, 222, 224, 238, 252, 259, 268, 272, 288, 294, 296, 306, 324, 333, 336, 357, 378, 384, 392, 402, 408, 432, 441, 444, 448, 459, 469, 476, 504, 518, 536, 544, 567, 576, 588, 592, 603, 612, 629, 648, 666, 672, 714, 756, 777, 784, 804, 816, 833, 864, 882, 888, 896, 918, 938, 952, 999, 1008, 1036, 1071, 1072, 1088, 1134, 1139, 1152, 1176, 1184, 1206, 1224, 1258, 1296, 1323, 1332, 1344, 1377, 1407, 1428, 1512, 1554, 1568, 1608, 1632, 1666, 1728, 1764, 1776, 1809, 1813, 1836, 1876, 1887, 1904, 1998, 2016, 2072, 2142, 2144, 2176, 2268, 2278, 2331, 2352, 2368, 2412, 2448, 2479, 2499, 2516, 2592, 2646, 2664, 2688, 2754, 2814, 2856, 2997, 3024, 3108, 3136, 3213, 3216, 3264, 3283, 3332, 3417, 3456, 3528, 3552, 3618, 3626, 3672, 3752, 3774, 3808, 3969, 3996, 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約数ペア:

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(119952, 178488), (120768, 177282), (121471, 176256), (123012, 174048), (123284, 173664), (126429, 169344), (127008, 168572), (127568, 167832), (127872, 167433), (130536, 164016), (133866, 159936), (134946, 158656), (135072, 158508), (135864, 157584), (137088, 156177), (138824, 154224), (140896, 151956), (143514, 149184), (145792, 146853)]