20175996981

素因数分解:

$3^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{727}}^1\times {\mathrm{4703}}^1$

素因数の和:5721

約数の個数: 32

約数和(自身を含む): 30902796288

約数和(自身を除く): 10726799307

約数列:

[1, 3, 7, 21, 281, 727, 843, 1967, 2181, 4703, 5089, 5901, 14109, 15267, 32921, 98763, 204287, 612861, 1321543, 1430009, 3419081, 3964629, 4290027, 9250801, 10257243, 23933567, 27752403, 71800701, 960761761, 2882285283, 6725332327, 20175996981]

約数ペア:

[(1, 20175996981), (3, 6725332327), (7, 2882285283), (21, 960761761), (281, 71800701), (727, 27752403), (843, 23933567), (1967, 10257243), (2181, 9250801), (4703, 4290027), (5089, 3964629), (5901, 3419081), (14109, 1430009), (15267, 1321543), (32921, 612861), (98763, 204287)]