16421909

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{569}}^1$

素因数の和:633

約数の個数: 24

約数和(自身を含む): 20793600

約数和(自身を除く): 4371691

約数列:

[1, 7, 19, 31, 49, 133, 217, 569, 589, 931, 1519, 3983, 4123, 10811, 17639, 27881, 28861, 75677, 123473, 335141, 529739, 864311, 2345987, 16421909]

約数ペア:

[(1, 16421909), (7, 2345987), (19, 864311), (31, 529739), (49, 335141), (133, 123473), (217, 75677), (569, 28861), (589, 27881), (931, 17639), (1519, 10811), (3983, 4123)]