21506672

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1373}}^1$

素因数の和:1481

約数の個数: 40

約数和(自身を含む): 46001520

約数和(自身を除く): 24494848

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 89, 176, 178, 356, 712, 979, 1373, 1424, 1958, 2746, 3916, 5492, 7832, 10984, 15103, 15664, 21968, 30206, 60412, 120824, 122197, 241648, 244394, 488788, 977576, 1344167, 1955152, 2688334, 5376668, 10753336, 21506672]

約数ペア:

[(1, 21506672), (2, 10753336), (4, 5376668), (8, 2688334), (11, 1955152), (16, 1344167), (22, 977576), (44, 488788), (88, 244394), (89, 241648), (176, 122197), (178, 120824), (356, 60412), (712, 30206), (979, 21968), (1373, 15664), (1424, 15103), (1958, 10984), (2746, 7832), (3916, 5492)]