19927720

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3803}}^1$

素因数の和:3945

約数の個数: 32

約数和(自身を含む): 45191520

約数和(自身を除く): 25263800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3803, 5240, 7606, 15212, 19015, 30424, 38030, 76060, 152120, 498193, 996386, 1992772, 2490965, 3985544, 4981930, 9963860, 19927720]

約数ペア:

[(1, 19927720), (2, 9963860), (4, 4981930), (5, 3985544), (8, 2490965), (10, 1992772), (20, 996386), (40, 498193), (131, 152120), (262, 76060), (524, 38030), (655, 30424), (1048, 19015), (1310, 15212), (2620, 7606), (3803, 5240)]