197408020

素因数分解:

$2^2\times 5^1\times {\mathrm{9870401}}^1$

素因数の和:9870410

約数の個数: 12

約数和(自身を含む): 414556884

約数和(自身を除く): 217148864

約数列:

[1, 2, 4, 5, 10, 20, 9870401, 19740802, 39481604, 49352005, 98704010, 197408020]

約数ペア:

[(1, 197408020), (2, 98704010), (4, 49352005), (5, 39481604), (10, 19740802), (20, 9870401)]