168720220

素因数分解:

$2^2\times 5^1\times {\mathrm{1061}}^1\times {\mathrm{7951}}^1$

素因数の和:9021

約数の個数: 24

約数和(自身を含む): 354691008

約数和(自身を除く): 185970788

約数列:

[1, 2, 4, 5, 10, 20, 1061, 2122, 4244, 5305, 7951, 10610, 15902, 21220, 31804, 39755, 79510, 159020, 8436011, 16872022, 33744044, 42180055, 84360110, 168720220]

約数ペア:

[(1, 168720220), (2, 84360110), (4, 42180055), (5, 33744044), (10, 16872022), (20, 8436011), (1061, 159020), (2122, 79510), (4244, 39755), (5305, 31804), (7951, 21220), (10610, 15902)]