20865884

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{9787}}^1$

素因数の和:9845

約数の個数: 24

約数和(自身を含む): 40287408

約数和(自身を除く): 19421524

約数列:

[1, 2, 4, 13, 26, 41, 52, 82, 164, 533, 1066, 2132, 9787, 19574, 39148, 127231, 254462, 401267, 508924, 802534, 1605068, 5216471, 10432942, 20865884]

約数ペア:

[(1, 20865884), (2, 10432942), (4, 5216471), (13, 1605068), (26, 802534), (41, 508924), (52, 401267), (82, 254462), (164, 127231), (533, 39148), (1066, 19574), (2132, 9787)]