21861785

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{4789}}^1$

素因数の和:4888

約数の個数: 16

約数和(自身を含む): 28969920

約数和(自身を除く): 7108135

約数列:

[1, 5, 11, 55, 83, 415, 913, 4565, 4789, 23945, 52679, 263395, 397487, 1987435, 4372357, 21861785]

約数ペア:

[(1, 21861785), (5, 4372357), (11, 1987435), (55, 397487), (83, 263395), (415, 52679), (913, 23945), (4565, 4789)]