21547757

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^4$

素因数の和:110

約数の個数: 20

約数和(自身を含む): 28085856

約数和(自身を除く): 6538099

約数列:

[1, 7, 11, 23, 77, 161, 253, 529, 1771, 3703, 5819, 12167, 40733, 85169, 133837, 279841, 936859, 1958887, 3078251, 21547757]

約数ペア:

[(1, 21547757), (7, 3078251), (11, 1958887), (23, 936859), (77, 279841), (161, 133837), (253, 85169), (529, 40733), (1771, 12167), (3703, 5819)]