20449863

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{283}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 35915776

約数和(自身を除く): 15465913

約数列:

[1, 3, 7, 9, 21, 31, 37, 63, 93, 111, 217, 259, 279, 283, 333, 651, 777, 849, 1147, 1953, 1981, 2331, 2547, 3441, 5943, 8029, 8773, 10323, 10471, 17829, 24087, 26319, 31413, 61411, 72261, 73297, 78957, 94239, 184233, 219891, 324601, 552699, 659673, 973803, 2272207, 2921409, 6816621, 20449863]

約数ペア:

[(1, 20449863), (3, 6816621), (7, 2921409), (9, 2272207), (21, 973803), (31, 659673), (37, 552699), (63, 324601), (93, 219891), (111, 184233), (217, 94239), (259, 78957), (279, 73297), (283, 72261), (333, 61411), (651, 31413), (777, 26319), (849, 24087), (1147, 17829), (1953, 10471), (1981, 10323), (2331, 8773), (2547, 8029), (3441, 5943)]