204872020

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{68749}}^1$

素因数の和:68907

約数の個数: 24

約数和(自身を含む): 433125000

約数和(自身を除く): 228252980

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 68749, 137498, 274996, 343745, 687490, 1374980, 10243601, 20487202, 40974404, 51218005, 102436010, 204872020]

約数ペア:

[(1, 204872020), (2, 102436010), (4, 51218005), (5, 40974404), (10, 20487202), (20, 10243601), (149, 1374980), (298, 687490), (596, 343745), (745, 274996), (1490, 137498), (2980, 68749)]