19994640796

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{167}}^1\times {\mathrm{177113}}^1$

素因数の和:177310

約数の個数: 36

約数和(自身を含む): 38116349712

約数和(自身を除く): 18121708916

約数列:

[1, 2, 4, 13, 26, 52, 167, 169, 334, 338, 668, 676, 2171, 4342, 8684, 28223, 56446, 112892, 177113, 354226, 708452, 2302469, 4604938, 9209876, 29577871, 29932097, 59155742, 59864194, 118311484, 119728388, 384512323, 769024646, 1538049292, 4998660199, 9997320398, 19994640796]

約数ペア:

[(1, 19994640796), (2, 9997320398), (4, 4998660199), (13, 1538049292), (26, 769024646), (52, 384512323), (167, 119728388), (169, 118311484), (334, 59864194), (338, 59155742), (668, 29932097), (676, 29577871), (2171, 9209876), (4342, 4604938), (8684, 2302469), (28223, 708452), (56446, 354226), (112892, 177113)]