18792020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72277}}^1$

素因数の和:72299

約数の個数: 24

約数和(自身を含む): 42499464

約数和(自身を除く): 23707444

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72277, 144554, 289108, 361385, 722770, 939601, 1445540, 1879202, 3758404, 4698005, 9396010, 18792020]

約数ペア:

[(1, 18792020), (2, 9396010), (4, 4698005), (5, 3758404), (10, 1879202), (13, 1445540), (20, 939601), (26, 722770), (52, 361385), (65, 289108), (130, 144554), (260, 72277)]