21178874

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:278

約数の個数: 32

約数和(自身を含む): 34473600

約数和(自身を除く): 13294726

約数列:

[1, 2, 29, 37, 58, 71, 74, 139, 142, 278, 1073, 2059, 2146, 2627, 4031, 4118, 5143, 5254, 8062, 9869, 10286, 19738, 76183, 149147, 152366, 286201, 298294, 365153, 572402, 730306, 10589437, 21178874]

約数ペア:

[(1, 21178874), (2, 10589437), (29, 730306), (37, 572402), (58, 365153), (71, 298294), (74, 286201), (139, 152366), (142, 149147), (278, 76183), (1073, 19738), (2059, 10286), (2146, 9869), (2627, 8062), (4031, 5254), (4118, 5143)]