19787878

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{3319}}^1$

素因数の和:3603

約数の個数: 16

約数和(自身を含む): 32509440

約数和(自身を除く): 12721562

約数列:

[1, 2, 11, 22, 271, 542, 2981, 3319, 5962, 6638, 36509, 73018, 899449, 1798898, 9893939, 19787878]

約数ペア:

[(1, 19787878), (2, 9893939), (11, 1798898), (22, 899449), (271, 73018), (542, 36509), (2981, 6638), (3319, 5962)]