21277980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{118211}}^1$

素因数の和:118226

約数の個数: 36

約数和(自身を含む): 64543752

約数和(自身を除く): 43265772

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 118211, 236422, 354633, 472844, 591055, 709266, 1063899, 1182110, 1418532, 1773165, 2127798, 2364220, 3546330, 4255596, 5319495, 7092660, 10638990, 21277980]

約数ペア:

[(1, 21277980), (2, 10638990), (3, 7092660), (4, 5319495), (5, 4255596), (6, 3546330), (9, 2364220), (10, 2127798), (12, 1773165), (15, 1418532), (18, 1182110), (20, 1063899), (30, 709266), (36, 591055), (45, 472844), (60, 354633), (90, 236422), (180, 118211)]