21605986978

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{643}}^1\times {\mathrm{454079}}^1$

素因数の和:454761

約数の個数: 16

約数和(自身を含む): 33336737280

約数和(自身を除く): 11730750302

約数列:

[1, 2, 37, 74, 643, 1286, 23791, 47582, 454079, 908158, 16800923, 33601846, 291972797, 583945594, 10802993489, 21605986978]

約数ペア:

[(1, 21605986978), (2, 10802993489), (37, 583945594), (74, 291972797), (643, 33601846), (1286, 16800923), (23791, 908158), (47582, 454079)]