21997260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{122207}}^1$

素因数の和:122222

約数の個数: 36

約数和(自身を含む): 66725568

約数和(自身を除く): 44728308

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 122207, 244414, 366621, 488828, 611035, 733242, 1099863, 1222070, 1466484, 1833105, 2199726, 2444140, 3666210, 4399452, 5499315, 7332420, 10998630, 21997260]

約数ペア:

[(1, 21997260), (2, 10998630), (3, 7332420), (4, 5499315), (5, 4399452), (6, 3666210), (9, 2444140), (10, 2199726), (12, 1833105), (15, 1466484), (18, 1222070), (20, 1099863), (30, 733242), (36, 611035), (45, 488828), (60, 366621), (90, 244414), (180, 122207)]