21326416

素因数分解:

$2^4\times {\mathrm{557}}^1\times {\mathrm{2393}}^1$

素因数の和:2958

約数の個数: 20

約数和(自身を含む): 41411412

約数和(自身を除く): 20084996

約数列:

[1, 2, 4, 8, 16, 557, 1114, 2228, 2393, 4456, 4786, 8912, 9572, 19144, 38288, 1332901, 2665802, 5331604, 10663208, 21326416]

約数ペア:

[(1, 21326416), (2, 10663208), (4, 5331604), (8, 2665802), (16, 1332901), (557, 38288), (1114, 19144), (2228, 9572), (2393, 8912), (4456, 4786)]