19880666

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{9679}}^1$

素因数の和:9773

約数の個数: 16

約数和(自身を含む): 32524800

約数和(自身を除く): 12644134

約数列:

[1, 2, 13, 26, 79, 158, 1027, 2054, 9679, 19358, 125827, 251654, 764641, 1529282, 9940333, 19880666]

約数ペア:

[(1, 19880666), (2, 9940333), (13, 1529282), (26, 764641), (79, 251654), (158, 125827), (1027, 19358), (2054, 9679)]