81871587

素因数分解:

$3^3\times 7^1\times {\mathrm{211}}^1\times {\mathrm{2053}}^1$

素因数の和:2280

約数の個数: 32

約数和(自身を含む): 139343360

約数和(自身を除く): 57471773

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 211, 633, 1477, 1899, 2053, 4431, 5697, 6159, 13293, 14371, 18477, 39879, 43113, 55431, 129339, 388017, 433183, 1299549, 3032281, 3898647, 9096843, 11695941, 27290529, 81871587]

約数ペア:

[(1, 81871587), (3, 27290529), (7, 11695941), (9, 9096843), (21, 3898647), (27, 3032281), (63, 1299549), (189, 433183), (211, 388017), (633, 129339), (1477, 55431), (1899, 43113), (2053, 39879), (4431, 18477), (5697, 14371), (6159, 13293)]