81105688

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{197}}^1\times {\mathrm{971}}^1$

素因数の和:1227

約数の個数: 32

約数和(自身を含む): 155889360

約数和(自身を除く): 74783672

約数列:

[1, 2, 4, 8, 53, 106, 197, 212, 394, 424, 788, 971, 1576, 1942, 3884, 7768, 10441, 20882, 41764, 51463, 83528, 102926, 191287, 205852, 382574, 411704, 765148, 1530296, 10138211, 20276422, 40552844, 81105688]

約数ペア:

[(1, 81105688), (2, 40552844), (4, 20276422), (8, 10138211), (53, 1530296), (106, 765148), (197, 411704), (212, 382574), (394, 205852), (424, 191287), (788, 102926), (971, 83528), (1576, 51463), (1942, 41764), (3884, 20882), (7768, 10441)]