21778953

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{673}}^1$

素因数の和:773

約数の個数: 32

約数和(自身を含む): 35198976

約数和(自身を除く): 13420023

約数列:

[1, 3, 7, 21, 23, 67, 69, 161, 201, 469, 483, 673, 1407, 1541, 2019, 4623, 4711, 10787, 14133, 15479, 32361, 45091, 46437, 108353, 135273, 315637, 325059, 946911, 1037093, 3111279, 7259651, 21778953]

約数ペア:

[(1, 21778953), (3, 7259651), (7, 3111279), (21, 1037093), (23, 946911), (67, 325059), (69, 315637), (161, 135273), (201, 108353), (469, 46437), (483, 45091), (673, 32361), (1407, 15479), (1541, 14133), (2019, 10787), (4623, 4711)]