19191986

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{6869}}^1$

素因数の和:7009

約数の個数: 16

約数和(自身を含む): 31656960

約数和(自身を除く): 12464974

約数列:

[1, 2, 11, 22, 127, 254, 1397, 2794, 6869, 13738, 75559, 151118, 872363, 1744726, 9595993, 19191986]

約数ペア:

[(1, 19191986), (2, 9595993), (11, 1744726), (22, 872363), (127, 151118), (254, 75559), (1397, 13738), (2794, 6869)]