21000446991

素因数分解:

$3^3\times {\mathrm{173}}^1\times {\mathrm{4495921}}^1$

素因数の和:4496103

約数の個数: 16

約数和(自身を含む): 31291617120

約数和(自身を除く): 10291170129

約数列:

[1, 3, 9, 27, 173, 519, 1557, 4671, 4495921, 13487763, 40463289, 121389867, 777794333, 2333382999, 7000148997, 21000446991]

約数ペア:

[(1, 21000446991), (3, 7000148997), (9, 2333382999), (27, 777794333), (173, 121389867), (519, 40463289), (1557, 13487763), (4671, 4495921)]