19988818

素因数分解:

$2^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1\times {\mathrm{631}}^1$

素因数の和:1017

約数の個数: 16

約数和(自身を含む): 30760704

約数和(自身を除く): 10771886

約数列:

[1, 2, 47, 94, 337, 631, 674, 1262, 15839, 29657, 31678, 59314, 212647, 425294, 9994409, 19988818]

約数ペア:

[(1, 19988818), (2, 9994409), (47, 425294), (94, 212647), (337, 59314), (631, 31678), (674, 29657), (1262, 15839)]