31920291

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{431}}^1$

素因数の和:664

約数の個数: 32

約数和(自身を含む): 51287040

約数和(自身を除く): 19366749

約数列:

[1, 3, 9, 13, 27, 39, 117, 211, 351, 431, 633, 1293, 1899, 2743, 3879, 5603, 5697, 8229, 11637, 16809, 24687, 50427, 74061, 90941, 151281, 272823, 818469, 1182233, 2455407, 3546699, 10640097, 31920291]

約数ペア:

[(1, 31920291), (3, 10640097), (9, 3546699), (13, 2455407), (27, 1182233), (39, 818469), (117, 272823), (211, 151281), (351, 90941), (431, 74061), (633, 50427), (1293, 24687), (1899, 16809), (2743, 11637), (3879, 8229), (5603, 5697)]