21512650

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{25309}}^1$

素因数の和:25338

約数の個数: 24

約数和(自身を含む): 42368940

約数和(自身を除く): 20856290

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 170, 425, 850, 25309, 50618, 126545, 253090, 430253, 632725, 860506, 1265450, 2151265, 4302530, 10756325, 21512650]

約数ペア:

[(1, 21512650), (2, 10756325), (5, 4302530), (10, 2151265), (17, 1265450), (25, 860506), (34, 632725), (50, 430253), (85, 253090), (170, 126545), (425, 50618), (850, 25309)]