18814874

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1$

素因数の和:542

約数の個数: 32

約数和(自身を含む): 32223744

約数和(自身を除く): 13408870

約数列:

[1, 2, 13, 23, 26, 46, 73, 146, 299, 431, 598, 862, 949, 1679, 1898, 3358, 5603, 9913, 11206, 19826, 21827, 31463, 43654, 62926, 128869, 257738, 409019, 723649, 818038, 1447298, 9407437, 18814874]

約数ペア:

[(1, 18814874), (2, 9407437), (13, 1447298), (23, 818038), (26, 723649), (46, 409019), (73, 257738), (146, 128869), (299, 62926), (431, 43654), (598, 31463), (862, 21827), (949, 19826), (1679, 11206), (1898, 9913), (3358, 5603)]