20210229

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1129}}^1$

素因数の和:1171

約数の個数: 40

約数和(自身を含む): 34455960

約数和(自身を除く): 14245731

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 81, 117, 153, 221, 351, 459, 663, 1053, 1129, 1377, 1989, 3387, 5967, 10161, 14677, 17901, 19193, 30483, 44031, 57579, 91449, 132093, 172737, 249509, 396279, 518211, 748527, 1188837, 1554633, 2245581, 6736743, 20210229]

約数ペア:

[(1, 20210229), (3, 6736743), (9, 2245581), (13, 1554633), (17, 1188837), (27, 748527), (39, 518211), (51, 396279), (81, 249509), (117, 172737), (153, 132093), (221, 91449), (351, 57579), (459, 44031), (663, 30483), (1053, 19193), (1129, 17901), (1377, 14677), (1989, 10161), (3387, 5967)]