20961684

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{15737}}^1$

素因数の和:15784

約数の個数: 36

約数和(自身を含む): 54422004

約数和(自身を除く): 33460320

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 74, 111, 148, 222, 333, 444, 666, 1332, 15737, 31474, 47211, 62948, 94422, 141633, 188844, 283266, 566532, 582269, 1164538, 1746807, 2329076, 3493614, 5240421, 6987228, 10480842, 20961684]

約数ペア:

[(1, 20961684), (2, 10480842), (3, 6987228), (4, 5240421), (6, 3493614), (9, 2329076), (12, 1746807), (18, 1164538), (36, 582269), (37, 566532), (74, 283266), (111, 188844), (148, 141633), (222, 94422), (333, 62948), (444, 47211), (666, 31474), (1332, 15737)]