21328912

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{479}}^1$

素因数の和:532

約数の個数: 60

約数和(自身を含む): 47496960

約数和(自身を除く): 26168048

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 44, 46, 88, 92, 121, 176, 184, 242, 253, 368, 479, 484, 506, 958, 968, 1012, 1916, 1936, 2024, 2783, 3832, 4048, 5269, 5566, 7664, 10538, 11017, 11132, 21076, 22034, 22264, 42152, 44068, 44528, 57959, 84304, 88136, 115918, 121187, 176272, 231836, 242374, 463672, 484748, 927344, 969496, 1333057, 1938992, 2666114, 5332228, 10664456, 21328912]

約数ペア:

[(1, 21328912), (2, 10664456), (4, 5332228), (8, 2666114), (11, 1938992), (16, 1333057), (22, 969496), (23, 927344), (44, 484748), (46, 463672), (88, 242374), (92, 231836), (121, 176272), (176, 121187), (184, 115918), (242, 88136), (253, 84304), (368, 57959), (479, 44528), (484, 44068), (506, 42152), (958, 22264), (968, 22034), (1012, 21076), (1916, 11132), (1936, 11017), (2024, 10538), (2783, 7664), (3832, 5566), (4048, 5269)]