21177123

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{163}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 32243712

約数和(自身を除く): 11066589

約数列:

[1, 3, 11, 31, 33, 93, 127, 163, 341, 381, 489, 1023, 1397, 1793, 3937, 4191, 5053, 5379, 11811, 15159, 20701, 43307, 55583, 62103, 129921, 166749, 227711, 641731, 683133, 1925193, 7059041, 21177123]

約数ペア:

[(1, 21177123), (3, 7059041), (11, 1925193), (31, 683133), (33, 641731), (93, 227711), (127, 166749), (163, 129921), (341, 62103), (381, 55583), (489, 43307), (1023, 20701), (1397, 15159), (1793, 11811), (3937, 5379), (4191, 5053)]