18835817

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{607}}^1$

素因数の和:669

約数の個数: 32

約数和(自身を含む): 26148864

約数和(自身を除く): 7313047

約数列:

[1, 7, 11, 13, 31, 77, 91, 143, 217, 341, 403, 607, 1001, 2387, 2821, 4249, 4433, 6677, 7891, 18817, 31031, 46739, 55237, 86801, 131719, 206987, 244621, 607607, 1448909, 1712347, 2690831, 18835817]

約数ペア:

[(1, 18835817), (7, 2690831), (11, 1712347), (13, 1448909), (31, 607607), (77, 244621), (91, 206987), (143, 131719), (217, 86801), (341, 55237), (403, 46739), (607, 31031), (1001, 18817), (2387, 7891), (2821, 6677), (4249, 4433)]