19907719

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{479}}^1$

素因数の和:654

約数の個数: 16

約数和(自身を含む): 22579200

約数和(自身を除く): 2671481

約数列:

[1, 13, 23, 139, 299, 479, 1807, 3197, 6227, 11017, 41561, 66581, 143221, 865553, 1531363, 19907719]

約数ペア:

[(1, 19907719), (13, 1531363), (23, 865553), (139, 143221), (299, 66581), (479, 41561), (1807, 11017), (3197, 6227)]