865884020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{709741}}^1$

素因数の和:709811

約数の個数: 24

約数和(自身を含む): 1848168168

約数和(自身を除く): 982284148

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 709741, 1419482, 2838964, 3548705, 7097410, 14194820, 43294201, 86588402, 173176804, 216471005, 432942010, 865884020]

約数ペア:

[(1, 865884020), (2, 432942010), (4, 216471005), (5, 173176804), (10, 86588402), (20, 43294201), (61, 14194820), (122, 7097410), (244, 3548705), (305, 2838964), (610, 1419482), (1220, 709741)]