21174309

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1321}}^1$

素因数の和:1477

約数の個数: 24

約数和(自身を含む): 33203352

約数和(自身を除く): 12029043

約数列:

[1, 3, 9, 13, 39, 117, 137, 411, 1233, 1321, 1781, 3963, 5343, 11889, 16029, 17173, 51519, 154557, 180977, 542931, 1628793, 2352701, 7058103, 21174309]

約数ペア:

[(1, 21174309), (3, 7058103), (9, 2352701), (13, 1628793), (39, 542931), (117, 180977), (137, 154557), (411, 51519), (1233, 17173), (1321, 16029), (1781, 11889), (3963, 5343)]