20090931

素因数分解:

$3^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{1409}}^1$

素因数の和:1523

約数の個数: 24

約数和(自身を含む): 31505040

約数和(自身を除く): 11414109

約数列:

[1, 3, 7, 21, 49, 97, 147, 291, 679, 1409, 2037, 4227, 4753, 9863, 14259, 29589, 69041, 136673, 207123, 410019, 956711, 2870133, 6696977, 20090931]

約数ペア:

[(1, 20090931), (3, 6696977), (7, 2870133), (21, 956711), (49, 410019), (97, 207123), (147, 136673), (291, 69041), (679, 29589), (1409, 14259), (2037, 9863), (4227, 4753)]