221781889

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{1129}}^1$

素因数の和:1373

約数の個数: 24

約数和(自身を含む): 273098400

約数和(自身を除く): 51316511

約数列:

[1, 7, 19, 49, 133, 211, 931, 1129, 1477, 4009, 7903, 10339, 21451, 28063, 55321, 150157, 196441, 238219, 1051099, 1667533, 4526161, 11672731, 31683127, 221781889]

約数ペア:

[(1, 221781889), (7, 31683127), (19, 11672731), (49, 4526161), (133, 1667533), (211, 1051099), (931, 238219), (1129, 196441), (1477, 150157), (4009, 55321), (7903, 28063), (10339, 21451)]