221296131

素因数分解:

$3^4\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1409}}^1$

素因数の和:1705

約数の個数: 40

約数和(自身を含む): 379436640

約数和(自身を除く): 158140509

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 277, 567, 831, 1409, 1939, 2493, 4227, 5817, 7479, 9863, 12681, 17451, 22437, 29589, 38043, 52353, 88767, 114129, 157059, 266301, 390293, 798903, 1170879, 2732051, 3512637, 8196153, 10537911, 24588459, 31613733, 73765377, 221296131]

約数ペア:

[(1, 221296131), (3, 73765377), (7, 31613733), (9, 24588459), (21, 10537911), (27, 8196153), (63, 3512637), (81, 2732051), (189, 1170879), (277, 798903), (567, 390293), (831, 266301), (1409, 157059), (1939, 114129), (2493, 88767), (4227, 52353), (5817, 38043), (7479, 29589), (9863, 22437), (12681, 17451)]