28928140

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{3607}}^1$

素因数の和:4017

約数の個数: 24

約数和(自身を含む): 60917472

約数和(自身を除く): 31989332

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 3607, 4010, 7214, 8020, 14428, 18035, 36070, 72140, 1446407, 2892814, 5785628, 7232035, 14464070, 28928140]

約数ペア:

[(1, 28928140), (2, 14464070), (4, 7232035), (5, 5785628), (10, 2892814), (20, 1446407), (401, 72140), (802, 36070), (1604, 18035), (2005, 14428), (3607, 8020), (4010, 7214)]