20561933

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2917}}^1$

素因数の和:2996

約数の個数: 16

約数和(自身を含む): 25211520

約数和(自身を除く): 4649587

約数列:

[1, 7, 19, 53, 133, 371, 1007, 2917, 7049, 20419, 55423, 154601, 387961, 1082207, 2937419, 20561933]

約数ペア:

[(1, 20561933), (7, 2937419), (19, 1082207), (53, 387961), (133, 154601), (371, 55423), (1007, 20419), (2917, 7049)]