21278049385

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{421}}^1\times {\mathrm{449}}^1\times {\mathrm{479}}^1$

素因数の和:1401

約数の個数: 32

約数和(自身を含む): 26251776000

約数和(自身を除く): 4973726615

約数列:

[1, 5, 47, 235, 421, 449, 479, 2105, 2245, 2395, 19787, 21103, 22513, 98935, 105515, 112565, 189029, 201659, 215071, 945145, 1008295, 1075355, 8884363, 9477973, 10108337, 44421815, 47389865, 50541685, 90544891, 452724455, 4255609877, 21278049385]

約数ペア:

[(1, 21278049385), (5, 4255609877), (47, 452724455), (235, 90544891), (421, 50541685), (449, 47389865), (479, 44421815), (2105, 10108337), (2245, 9477973), (2395, 8884363), (19787, 1075355), (21103, 1008295), (22513, 945145), (98935, 215071), (105515, 201659), (112565, 189029)]