20697201

素因数分解:

$3^4\times 7^1\times {\mathrm{173}}^1\times {\mathrm{211}}^1$

素因数の和:403

約数の個数: 40

約数和(自身を含む): 35707584

約数和(自身を除く): 15010383

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 173, 189, 211, 519, 567, 633, 1211, 1477, 1557, 1899, 3633, 4431, 4671, 5697, 10899, 13293, 14013, 17091, 32697, 36503, 39879, 98091, 109509, 119637, 255521, 328527, 766563, 985581, 2299689, 2956743, 6899067, 20697201]

約数ペア:

[(1, 20697201), (3, 6899067), (7, 2956743), (9, 2299689), (21, 985581), (27, 766563), (63, 328527), (81, 255521), (173, 119637), (189, 109509), (211, 98091), (519, 39879), (567, 36503), (633, 32697), (1211, 17091), (1477, 14013), (1557, 13293), (1899, 10899), (3633, 5697), (4431, 4671)]