19618804

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{55109}}^1$

素因数の和:55202

約数の個数: 12

約数和(自身を含む): 34719300

約数和(自身を除く): 15100496

約数列:

[1, 2, 4, 89, 178, 356, 55109, 110218, 220436, 4904701, 9809402, 19618804]

約数ペア:

[(1, 19618804), (2, 9809402), (4, 4904701), (89, 220436), (178, 110218), (356, 55109)]