21696040

素因数分解:

$2^3\times 5^1\times {\mathrm{542401}}^1$

素因数の和:542412

約数の個数: 16

約数和(自身を含む): 48816180

約数和(自身を除く): 27120140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 542401, 1084802, 2169604, 2712005, 4339208, 5424010, 10848020, 21696040]

約数ペア:

[(1, 21696040), (2, 10848020), (4, 5424010), (5, 4339208), (8, 2712005), (10, 2169604), (20, 1084802), (40, 542401)]