21998403

素因数分解:

$3^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{601}}^1$

素因数の和:704

約数の個数: 36

約数和(自身を含む): 37470888

約数和(自身を除く): 15472485

約数列:

[1, 3, 7, 9, 21, 49, 63, 83, 147, 249, 441, 581, 601, 747, 1743, 1803, 4067, 4207, 5229, 5409, 12201, 12621, 29449, 36603, 37863, 49883, 88347, 149649, 265041, 349181, 448947, 1047543, 2444267, 3142629, 7332801, 21998403]

約数ペア:

[(1, 21998403), (3, 7332801), (7, 3142629), (9, 2444267), (21, 1047543), (49, 448947), (63, 349181), (83, 265041), (147, 149649), (249, 88347), (441, 49883), (581, 37863), (601, 36603), (747, 29449), (1743, 12621), (1803, 12201), (4067, 5409), (4207, 5229)]