28079961

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1409}}^1$

素因数の和:1505

約数の個数: 32

約数和(自身を含む): 46744320

約数和(自身を除く): 18664359

約数列:

[1, 3, 7, 13, 21, 39, 73, 91, 219, 273, 511, 949, 1409, 1533, 2847, 4227, 6643, 9863, 18317, 19929, 29589, 54951, 102857, 128219, 308571, 384657, 719999, 1337141, 2159997, 4011423, 9359987, 28079961]

約数ペア:

[(1, 28079961), (3, 9359987), (7, 4011423), (13, 2159997), (21, 1337141), (39, 719999), (73, 384657), (91, 308571), (219, 128219), (273, 102857), (511, 54951), (949, 29589), (1409, 19929), (1533, 18317), (2847, 9863), (4227, 6643)]