18977881

素因数分解:

${\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{227}}^1$

素因数の和:408

約数の個数: 16

約数和(自身を含む): 21067200

約数和(自身を除く): 2089319

約数列:

[1, 13, 59, 109, 227, 767, 1417, 2951, 6431, 13393, 24743, 83603, 174109, 321659, 1459837, 18977881]

約数ペア:

[(1, 18977881), (13, 1459837), (59, 321659), (109, 174109), (227, 83603), (767, 24743), (1417, 13393), (2951, 6431)]