20572551

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{313}}^1$

素因数の和:495

約数の個数: 24

約数和(自身を含む): 30533360

約数和(自身を除く): 9960809

約数列:

[1, 3, 9, 67, 109, 201, 313, 327, 603, 939, 981, 2817, 7303, 20971, 21909, 34117, 62913, 65727, 102351, 188739, 307053, 2285839, 6857517, 20572551]

約数ペア:

[(1, 20572551), (3, 6857517), (9, 2285839), (67, 307053), (109, 188739), (201, 102351), (313, 65727), (327, 62913), (603, 34117), (939, 21909), (981, 20971), (2817, 7303)]