21047642

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{1409}}^1$

素因数の和:1526

約数の個数: 32

約数和(自身を含む): 39795840

約数和(自身を除く): 18748198

約数列:

[1, 2, 7, 11, 14, 22, 77, 97, 154, 194, 679, 1067, 1358, 1409, 2134, 2818, 7469, 9863, 14938, 15499, 19726, 30998, 108493, 136673, 216986, 273346, 956711, 1503403, 1913422, 3006806, 10523821, 21047642]

約数ペア:

[(1, 21047642), (2, 10523821), (7, 3006806), (11, 1913422), (14, 1503403), (22, 956711), (77, 273346), (97, 216986), (154, 136673), (194, 108493), (679, 30998), (1067, 19726), (1358, 15499), (1409, 14938), (2134, 9863), (2818, 7469)]