21407896

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{157411}}^1$

素因数の和:157434

約数の個数: 16

約数和(自身を含む): 42501240

約数和(自身を除く): 21093344

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 157411, 314822, 629644, 1259288, 2675987, 5351974, 10703948, 21407896]

約数ペア:

[(1, 21407896), (2, 10703948), (4, 5351974), (8, 2675987), (17, 1259288), (34, 629644), (68, 314822), (136, 157411)]