21394373

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1$

素因数の和:138

約数の個数: 48

約数和(自身を含む): 30387840

約数和(自身を除く): 8993467

約数列:

[1, 7, 11, 13, 29, 67, 77, 91, 121, 143, 203, 319, 377, 469, 737, 847, 871, 1001, 1573, 1943, 2233, 2639, 3509, 4147, 5159, 6097, 8107, 9581, 11011, 13601, 21373, 24563, 25259, 29029, 45617, 56749, 67067, 105391, 149611, 176813, 235103, 277849, 319319, 737737, 1645721, 1944943, 3056339, 21394373]

約数ペア:

[(1, 21394373), (7, 3056339), (11, 1944943), (13, 1645721), (29, 737737), (67, 319319), (77, 277849), (91, 235103), (121, 176813), (143, 149611), (203, 105391), (319, 67067), (377, 56749), (469, 45617), (737, 29029), (847, 25259), (871, 24563), (1001, 21373), (1573, 13601), (1943, 11011), (2233, 9581), (2639, 8107), (3509, 6097), (4147, 5159)]