21397354

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{8923}}^1$

素因数の和:9045

約数の個数: 16

約数和(自身を含む): 35339040

約数和(自身を除く): 13941686

約数列:

[1, 2, 11, 22, 109, 218, 1199, 2398, 8923, 17846, 98153, 196306, 972607, 1945214, 10698677, 21397354]

約数ペア:

[(1, 21397354), (2, 10698677), (11, 1945214), (22, 972607), (109, 196306), (218, 98153), (1199, 17846), (2398, 8923)]