19974857

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{233}}^1\times {\mathrm{331}}^1$

素因数の和:608

約数の個数: 16

約数和(自身を含む): 23617152

約数和(自身を除く): 3642295

約数列:

[1, 7, 37, 233, 259, 331, 1631, 2317, 8621, 12247, 60347, 77123, 85729, 539861, 2853551, 19974857]

約数ペア:

[(1, 19974857), (7, 2853551), (37, 539861), (233, 85729), (259, 77123), (331, 60347), (1631, 12247), (2317, 8621)]