128204060

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{87811}}^1$

素因数の和:87893

約数の個数: 24

約数和(自身を含む): 272919696

約数和(自身を除く): 144715636

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 87811, 175622, 351244, 439055, 878110, 1756220, 6410203, 12820406, 25640812, 32051015, 64102030, 128204060]

約数ペア:

[(1, 128204060), (2, 64102030), (4, 32051015), (5, 25640812), (10, 12820406), (20, 6410203), (73, 1756220), (146, 878110), (292, 439055), (365, 351244), (730, 175622), (1460, 87811)]