21783554

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{1303}}^1$

素因数の和:1961

約数の個数: 16

約数和(自身を含む): 35270592

約数和(自身を除く): 13487038

約数列:

[1, 2, 13, 26, 643, 1286, 1303, 2606, 8359, 16718, 16939, 33878, 837829, 1675658, 10891777, 21783554]

約数ペア:

[(1, 21783554), (2, 10891777), (13, 1675658), (26, 837829), (643, 33878), (1286, 16939), (1303, 16718), (2606, 8359)]