21000298492

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{12049}}^1$

素因数の和:12179

約数の個数: 72

約数和(自身を含む): 41650005600

約数和(自身を除く): 20649707108

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 71, 76, 142, 284, 323, 361, 646, 722, 1207, 1292, 1349, 1444, 2414, 2698, 4828, 5396, 6137, 12049, 12274, 22933, 24098, 24548, 25631, 45866, 48196, 51262, 91732, 102524, 204833, 228931, 409666, 435727, 457862, 819332, 855479, 871454, 915724, 1710958, 1742908, 3421916, 3891827, 4349689, 7783654, 8699378, 14543143, 15567308, 16254101, 17398756, 29086286, 32508202, 58172572, 65016404, 73944713, 147889426, 276319717, 295778852, 308827919, 552639434, 617655838, 1105278868, 1235311676, 5250074623, 10500149246, 21000298492]

約数ペア:

[(1, 21000298492), (2, 10500149246), (4, 5250074623), (17, 1235311676), (19, 1105278868), (34, 617655838), (38, 552639434), (68, 308827919), (71, 295778852), (76, 276319717), (142, 147889426), (284, 73944713), (323, 65016404), (361, 58172572), (646, 32508202), (722, 29086286), (1207, 17398756), (1292, 16254101), (1349, 15567308), (1444, 14543143), (2414, 8699378), (2698, 7783654), (4828, 4349689), (5396, 3891827), (6137, 3421916), (12049, 1742908), (12274, 1710958), (22933, 915724), (24098, 871454), (24548, 855479), (25631, 819332), (45866, 457862), (48196, 435727), (51262, 409666), (91732, 228931), (102524, 204833)]