20465379

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{223}}^1$

素因数の和:349

約数の個数: 40

約数和(自身を含む): 33825792

約数和(自身を除く): 13360413

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 103, 223, 297, 309, 669, 891, 927, 1133, 2007, 2453, 2781, 3399, 6021, 7359, 8343, 10197, 18063, 22077, 22969, 30591, 66231, 68907, 91773, 198693, 206721, 252659, 620163, 757977, 1860489, 2273931, 6821793, 20465379]

約数ペア:

[(1, 20465379), (3, 6821793), (9, 2273931), (11, 1860489), (27, 757977), (33, 620163), (81, 252659), (99, 206721), (103, 198693), (223, 91773), (297, 68907), (309, 66231), (669, 30591), (891, 22969), (927, 22077), (1133, 18063), (2007, 10197), (2453, 8343), (2781, 7359), (3399, 6021)]