1297880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 2967840

約数和(自身を除く): 1669960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 457, 568, 710, 914, 1420, 1828, 2285, 2840, 3656, 4570, 9140, 18280, 32447, 64894, 129788, 162235, 259576, 324470, 648940, 1297880]

約数ペア:

[(1, 1297880), (2, 648940), (4, 324470), (5, 259576), (8, 162235), (10, 129788), (20, 64894), (40, 32447), (71, 18280), (142, 9140), (284, 4570), (355, 3656), (457, 2840), (568, 2285), (710, 1828), (914, 1420)]