21830140

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^2\times {\mathrm{107}}^1$

素因数の和:318

約数の個数: 36

約数和(自身を含む): 46734408

約数和(自身を除く): 24904268

約数列:

[1, 2, 4, 5, 10, 20, 101, 107, 202, 214, 404, 428, 505, 535, 1010, 1070, 2020, 2140, 10201, 10807, 20402, 21614, 40804, 43228, 51005, 54035, 102010, 108070, 204020, 216140, 1091507, 2183014, 4366028, 5457535, 10915070, 21830140]

約数ペア:

[(1, 21830140), (2, 10915070), (4, 5457535), (5, 4366028), (10, 2183014), (20, 1091507), (101, 216140), (107, 204020), (202, 108070), (214, 102010), (404, 54035), (428, 51005), (505, 43228), (535, 40804), (1010, 21614), (1070, 20402), (2020, 10807), (2140, 10201)]