81985813

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{661}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 106767360

約数和(自身を除く): 24781547

約数列:

[1, 7, 13, 29, 47, 91, 203, 329, 377, 611, 661, 1363, 2639, 4277, 4627, 8593, 9541, 17719, 19169, 31067, 60151, 124033, 134183, 217469, 249197, 403871, 900943, 1744379, 2827097, 6306601, 11712259, 81985813]

約数ペア:

[(1, 81985813), (7, 11712259), (13, 6306601), (29, 2827097), (47, 1744379), (91, 900943), (203, 403871), (329, 249197), (377, 217469), (611, 134183), (661, 124033), (1363, 60151), (2639, 31067), (4277, 19169), (4627, 17719), (8593, 9541)]