81229113

素因数分解:

$3^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{3919}}^1$

素因数の和:3986

約数の個数: 36

約数和(自身を含む): 139426560

約数和(自身を除く): 58197447

約数列:

[1, 3, 7, 9, 21, 47, 49, 63, 141, 147, 329, 423, 441, 987, 2303, 2961, 3919, 6909, 11757, 20727, 27433, 35271, 82299, 184193, 192031, 246897, 552579, 576093, 1289351, 1657737, 1728279, 3868053, 9025457, 11604159, 27076371, 81229113]

約数ペア:

[(1, 81229113), (3, 27076371), (7, 11604159), (9, 9025457), (21, 3868053), (47, 1728279), (49, 1657737), (63, 1289351), (141, 576093), (147, 552579), (329, 246897), (423, 192031), (441, 184193), (987, 82299), (2303, 35271), (2961, 27433), (3919, 20727), (6909, 11757)]