21050128

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:244

約数の個数: 60

約数和(自身を含む): 45715824

約数和(自身を除く): 24665696

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 83, 88, 121, 131, 166, 176, 242, 262, 332, 484, 524, 664, 913, 968, 1048, 1328, 1441, 1826, 1936, 2096, 2882, 3652, 5764, 7304, 10043, 10873, 11528, 14608, 15851, 20086, 21746, 23056, 31702, 40172, 43492, 63404, 80344, 86984, 119603, 126808, 160688, 173968, 239206, 253616, 478412, 956824, 1315633, 1913648, 2631266, 5262532, 10525064, 21050128]

約数ペア:

[(1, 21050128), (2, 10525064), (4, 5262532), (8, 2631266), (11, 1913648), (16, 1315633), (22, 956824), (44, 478412), (83, 253616), (88, 239206), (121, 173968), (131, 160688), (166, 126808), (176, 119603), (242, 86984), (262, 80344), (332, 63404), (484, 43492), (524, 40172), (664, 31702), (913, 23056), (968, 21746), (1048, 20086), (1328, 15851), (1441, 14608), (1826, 11528), (1936, 10873), (2096, 10043), (2882, 7304), (3652, 5764)]