20001780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{111121}}^1$

素因数の和:111136

約数の個数: 36

約数和(自身を含む): 60672612

約数和(自身を除く): 40670832

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 111121, 222242, 333363, 444484, 555605, 666726, 1000089, 1111210, 1333452, 1666815, 2000178, 2222420, 3333630, 4000356, 5000445, 6667260, 10000890, 20001780]

約数ペア:

[(1, 20001780), (2, 10000890), (3, 6667260), (4, 5000445), (5, 4000356), (6, 3333630), (9, 2222420), (10, 2000178), (12, 1666815), (15, 1333452), (18, 1111210), (20, 1000089), (30, 666726), (36, 555605), (45, 444484), (60, 333363), (90, 222242), (180, 111121)]