20718261

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:303

約数の個数: 40

約数和(自身を含む): 32958464

約数和(自身を除く): 12240203

約数列:

[1, 3, 9, 27, 31, 37, 81, 93, 111, 223, 279, 333, 669, 837, 999, 1147, 2007, 2511, 2997, 3441, 6021, 6913, 8251, 10323, 18063, 20739, 24753, 30969, 62217, 74259, 92907, 186651, 222777, 255781, 559953, 668331, 767343, 2302029, 6906087, 20718261]

約数ペア:

[(1, 20718261), (3, 6906087), (9, 2302029), (27, 767343), (31, 668331), (37, 559953), (81, 255781), (93, 222777), (111, 186651), (223, 92907), (279, 74259), (333, 62217), (669, 30969), (837, 24753), (999, 20739), (1147, 18063), (2007, 10323), (2511, 8251), (2997, 6913), (3441, 6021)]