21255147

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{349}}^1$

素因数の和:523

約数の個数: 24

約数和(自身を含む): 31558800

約数和(自身を除く): 10303653

約数列:

[1, 3, 9, 67, 101, 201, 303, 349, 603, 909, 1047, 3141, 6767, 20301, 23383, 35249, 60903, 70149, 105747, 210447, 317241, 2361683, 7085049, 21255147]

約数ペア:

[(1, 21255147), (3, 7085049), (9, 2361683), (67, 317241), (101, 210447), (201, 105747), (303, 70149), (349, 60903), (603, 35249), (909, 23383), (1047, 20301), (3141, 6767)]