19370721

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{47}}^2\times {\mathrm{79}}^1$

素因数の和:213

約数の個数: 24

約数和(自身を含む): 27445120

約数和(自身を除く): 8074399

約数列:

[1, 3, 37, 47, 79, 111, 141, 237, 1739, 2209, 2923, 3713, 5217, 6627, 8769, 11139, 81733, 137381, 174511, 245199, 412143, 523533, 6456907, 19370721]

約数ペア:

[(1, 19370721), (3, 6456907), (37, 523533), (47, 412143), (79, 245199), (111, 174511), (141, 137381), (237, 81733), (1739, 11139), (2209, 8769), (2923, 6627), (3713, 5217)]