21711380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63857}}^1$

素因数の和:63883

約数の個数: 24

約数和(自身を含む): 48276648

約数和(自身を除く): 26565268

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63857, 127714, 255428, 319285, 638570, 1085569, 1277140, 2171138, 4342276, 5427845, 10855690, 21711380]

約数ペア:

[(1, 21711380), (2, 10855690), (4, 5427845), (5, 4342276), (10, 2171138), (17, 1277140), (20, 1085569), (34, 638570), (68, 319285), (85, 255428), (170, 127714), (340, 63857)]