21388504

素因数分解:

$2^3\times {\mathrm{659}}^1\times {\mathrm{4057}}^1$

素因数の和:4722

約数の個数: 16

約数和(自身を含む): 40174200

約数和(自身を除く): 18785696

約数列:

[1, 2, 4, 8, 659, 1318, 2636, 4057, 5272, 8114, 16228, 32456, 2673563, 5347126, 10694252, 21388504]

約数ペア:

[(1, 21388504), (2, 10694252), (4, 5347126), (8, 2673563), (659, 32456), (1318, 16228), (2636, 8114), (4057, 5272)]