20590120

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11971}}^1$

素因数の和:12025

約数の個数: 32

約数和(自身を含む): 47409120

約数和(自身を除く): 26819000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11971, 23942, 47884, 59855, 95768, 119710, 239420, 478840, 514753, 1029506, 2059012, 2573765, 4118024, 5147530, 10295060, 20590120]

約数ペア:

[(1, 20590120), (2, 10295060), (4, 5147530), (5, 4118024), (8, 2573765), (10, 2059012), (20, 1029506), (40, 514753), (43, 478840), (86, 239420), (172, 119710), (215, 95768), (344, 59855), (430, 47884), (860, 23942), (1720, 11971)]