18646281

素因数分解:

$3^4\times {\mathrm{211}}^1\times {\mathrm{1091}}^1$

素因数の和:1314

約数の個数: 20

約数和(自身を含む): 28011984

約数和(自身を除く): 9365703

約数列:

[1, 3, 9, 27, 81, 211, 633, 1091, 1899, 3273, 5697, 9819, 17091, 29457, 88371, 230201, 690603, 2071809, 6215427, 18646281]

約数ペア:

[(1, 18646281), (3, 6215427), (9, 2071809), (27, 690603), (81, 230201), (211, 88371), (633, 29457), (1091, 17091), (1899, 9819), (3273, 5697)]