21405824

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{661}}^1$

素因数の和:709

約数の個数: 64

約数和(自身を含む): 48617280

約数和(自身を除く): 27211456

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 32, 44, 46, 64, 88, 92, 128, 176, 184, 253, 352, 368, 506, 661, 704, 736, 1012, 1322, 1408, 1472, 2024, 2644, 2944, 4048, 5288, 7271, 8096, 10576, 14542, 15203, 16192, 21152, 29084, 30406, 32384, 42304, 58168, 60812, 84608, 116336, 121624, 167233, 232672, 243248, 334466, 465344, 486496, 668932, 930688, 972992, 1337864, 1945984, 2675728, 5351456, 10702912, 21405824]

約数ペア:

[(1, 21405824), (2, 10702912), (4, 5351456), (8, 2675728), (11, 1945984), (16, 1337864), (22, 972992), (23, 930688), (32, 668932), (44, 486496), (46, 465344), (64, 334466), (88, 243248), (92, 232672), (128, 167233), (176, 121624), (184, 116336), (253, 84608), (352, 60812), (368, 58168), (506, 42304), (661, 32384), (704, 30406), (736, 29084), (1012, 21152), (1322, 16192), (1408, 15203), (1472, 14542), (2024, 10576), (2644, 8096), (2944, 7271), (4048, 5288)]