21310628

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{6521}}^1$

素因数の和:6587

約数の個数: 24

約数和(自身を含む): 40175520

約数和(自身を除く): 18864892

約数列:

[1, 2, 4, 19, 38, 43, 76, 86, 172, 817, 1634, 3268, 6521, 13042, 26084, 123899, 247798, 280403, 495596, 560806, 1121612, 5327657, 10655314, 21310628]

約数ペア:

[(1, 21310628), (2, 10655314), (4, 5327657), (19, 1121612), (38, 560806), (43, 495596), (76, 280403), (86, 247798), (172, 123899), (817, 26084), (1634, 13042), (3268, 6521)]