80281240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{154387}}^1$

素因数の和:154411

約数の個数: 32

約数和(自身を含む): 194528880

約数和(自身を除く): 114247640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 154387, 308774, 617548, 771935, 1235096, 1543870, 2007031, 3087740, 4014062, 6175480, 8028124, 10035155, 16056248, 20070310, 40140620, 80281240]

約数ペア:

[(1, 80281240), (2, 40140620), (4, 20070310), (5, 16056248), (8, 10035155), (10, 8028124), (13, 6175480), (20, 4014062), (26, 3087740), (40, 2007031), (52, 1543870), (65, 1235096), (104, 771935), (130, 617548), (260, 308774), (520, 154387)]