217311490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{7687}}^1$

素因数の和:7962

約数の個数: 32

約数和(自身を含む): 428436864

約数和(自身を除く): 211125374

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 257, 514, 1285, 2570, 2827, 5654, 7687, 14135, 15374, 28270, 38435, 76870, 84557, 169114, 422785, 845570, 1975559, 3951118, 9877795, 19755590, 21731149, 43462298, 108655745, 217311490]

約数ペア:

[(1, 217311490), (2, 108655745), (5, 43462298), (10, 21731149), (11, 19755590), (22, 9877795), (55, 3951118), (110, 1975559), (257, 845570), (514, 422785), (1285, 169114), (2570, 84557), (2827, 76870), (5654, 38435), (7687, 28270), (14135, 15374)]