21692780

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{10739}}^1$

素因数の和:10849

約数の個数: 24

約数和(自身を含む): 46010160

約数和(自身を除く): 24317380

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 10739, 21478, 42956, 53695, 107390, 214780, 1084639, 2169278, 4338556, 5423195, 10846390, 21692780]

約数ペア:

[(1, 21692780), (2, 10846390), (4, 5423195), (5, 4338556), (10, 2169278), (20, 1084639), (101, 214780), (202, 107390), (404, 53695), (505, 42956), (1010, 21478), (2020, 10739)]