20462139

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1$

素因数の和:353

約数の個数: 40

約数和(自身を含む): 32757120

約数和(自身を除く): 12294981

約数列:

[1, 3, 9, 27, 29, 31, 81, 87, 93, 261, 279, 281, 783, 837, 843, 899, 2349, 2511, 2529, 2697, 7587, 8091, 8149, 8711, 22761, 24273, 24447, 26133, 72819, 73341, 78399, 220023, 235197, 252619, 660069, 705591, 757857, 2273571, 6820713, 20462139]

約数ペア:

[(1, 20462139), (3, 6820713), (9, 2273571), (27, 757857), (29, 705591), (31, 660069), (81, 252619), (87, 235197), (93, 220023), (261, 78399), (279, 73341), (281, 72819), (783, 26133), (837, 24447), (843, 24273), (899, 22761), (2349, 8711), (2511, 8149), (2529, 8091), (2697, 7587)]