21871168

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{661}}^1$

素因数の和:731

約数の個数: 56

約数和(自身を含む): 48426624

約数和(自身を除く): 26555456

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 47, 64, 88, 94, 176, 188, 352, 376, 517, 661, 704, 752, 1034, 1322, 1504, 2068, 2644, 3008, 4136, 5288, 7271, 8272, 10576, 14542, 16544, 21152, 29084, 31067, 33088, 42304, 58168, 62134, 116336, 124268, 232672, 248536, 341737, 465344, 497072, 683474, 994144, 1366948, 1988288, 2733896, 5467792, 10935584, 21871168]

約数ペア:

[(1, 21871168), (2, 10935584), (4, 5467792), (8, 2733896), (11, 1988288), (16, 1366948), (22, 994144), (32, 683474), (44, 497072), (47, 465344), (64, 341737), (88, 248536), (94, 232672), (176, 124268), (188, 116336), (352, 62134), (376, 58168), (517, 42304), (661, 33088), (704, 31067), (752, 29084), (1034, 21152), (1322, 16544), (1504, 14542), (2068, 10576), (2644, 8272), (3008, 7271), (4136, 5288)]