128378965

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{439}}^1$

素因数の和:877

約数の個数: 32

約数和(自身を含む): 181843200

約数和(自身を除く): 53464235

約数列:

[1, 5, 11, 13, 55, 65, 143, 409, 439, 715, 2045, 2195, 4499, 4829, 5317, 5707, 22495, 24145, 26585, 28535, 58487, 62777, 179551, 292435, 313885, 897755, 1975061, 2334163, 9875305, 11670815, 25675793, 128378965]

約数ペア:

[(1, 128378965), (5, 25675793), (11, 11670815), (13, 9875305), (55, 2334163), (65, 1975061), (143, 897755), (409, 313885), (439, 292435), (715, 179551), (2045, 62777), (2195, 58487), (4499, 28535), (4829, 26585), (5317, 24145), (5707, 22495)]