199437580

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{140449}}^1$

素因数の和:140529

約数の個数: 24

約数和(自身を含む): 424720800

約数和(自身を除く): 225283220

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 140449, 280898, 561796, 702245, 1404490, 2808980, 9971879, 19943758, 39887516, 49859395, 99718790, 199437580]

約数ペア:

[(1, 199437580), (2, 99718790), (4, 49859395), (5, 39887516), (10, 19943758), (20, 9971879), (71, 2808980), (142, 1404490), (284, 702245), (355, 561796), (710, 280898), (1420, 140449)]