81891837

素因数分解:

$3^3\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{643}}^1$

素因数の和:794

約数の個数: 32

約数和(自身を含む): 125193600

約数和(自身を除く): 43301763

約数列:

[1, 3, 9, 27, 53, 89, 159, 267, 477, 643, 801, 1431, 1929, 2403, 4717, 5787, 14151, 17361, 34079, 42453, 57227, 102237, 127359, 171681, 306711, 515043, 920133, 1545129, 3033031, 9099093, 27297279, 81891837]

約数ペア:

[(1, 81891837), (3, 27297279), (9, 9099093), (27, 3033031), (53, 1545129), (89, 920133), (159, 515043), (267, 306711), (477, 171681), (643, 127359), (801, 102237), (1431, 57227), (1929, 42453), (2403, 34079), (4717, 17361), (5787, 14151)]