220420

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:219

約数の個数: 24

約数和(自身を含む): 471744

約数和(自身を除く): 251324

約数列:

[1, 2, 4, 5, 10, 20, 103, 107, 206, 214, 412, 428, 515, 535, 1030, 1070, 2060, 2140, 11021, 22042, 44084, 55105, 110210, 220420]

約数ペア:

[(1, 220420), (2, 110210), (4, 55105), (5, 44084), (10, 22042), (20, 11021), (103, 2140), (107, 2060), (206, 1070), (214, 1030), (412, 535), (428, 515)]