20897811

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4139}}^1$

素因数の和:4176

約数の個数: 32

約数和(自身を含む): 35769600

約数和(自身を除く): 14871789

約数列:

[1, 3, 9, 11, 17, 27, 33, 51, 99, 153, 187, 297, 459, 561, 1683, 4139, 5049, 12417, 37251, 45529, 70363, 111753, 136587, 211089, 409761, 633267, 773993, 1229283, 1899801, 2321979, 6965937, 20897811]

約数ペア:

[(1, 20897811), (3, 6965937), (9, 2321979), (11, 1899801), (17, 1229283), (27, 773993), (33, 633267), (51, 409761), (99, 211089), (153, 136587), (187, 111753), (297, 70363), (459, 45529), (561, 37251), (1683, 12417), (4139, 5049)]