18987558

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{617}}^1$

素因数の和:868

約数の個数: 32

約数和(自身を含む): 39868416

約数和(自身を除く): 20880858

約数列:

[1, 2, 3, 6, 23, 46, 69, 138, 223, 446, 617, 669, 1234, 1338, 1851, 3702, 5129, 10258, 14191, 15387, 28382, 30774, 42573, 85146, 137591, 275182, 412773, 825546, 3164593, 6329186, 9493779, 18987558]

約数ペア:

[(1, 18987558), (2, 9493779), (3, 6329186), (6, 3164593), (23, 825546), (46, 412773), (69, 275182), (138, 137591), (223, 85146), (446, 42573), (617, 30774), (669, 28382), (1234, 15387), (1338, 14191), (1851, 10258), (3702, 5129)]