2002990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:288

約数の個数: 32

約数和(自身を含む): 3991680

約数和(自身を除く): 1988690

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 131, 139, 262, 278, 655, 695, 1310, 1390, 1441, 1529, 2882, 3058, 7205, 7645, 14410, 15290, 18209, 36418, 91045, 182090, 200299, 400598, 1001495, 2002990]

約数ペア:

[(1, 2002990), (2, 1001495), (5, 400598), (10, 200299), (11, 182090), (22, 91045), (55, 36418), (110, 18209), (131, 15290), (139, 14410), (262, 7645), (278, 7205), (655, 3058), (695, 2882), (1310, 1529), (1390, 1441)]