20638785

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{907}}^1$

素因数の和:993

約数の個数: 32

約数和(自身を含む): 34780032

約数和(自身を除く): 14141247

約数列:

[1, 3, 5, 15, 37, 41, 111, 123, 185, 205, 555, 615, 907, 1517, 2721, 4535, 4551, 7585, 13605, 22755, 33559, 37187, 100677, 111561, 167795, 185935, 503385, 557805, 1375919, 4127757, 6879595, 20638785]

約数ペア:

[(1, 20638785), (3, 6879595), (5, 4127757), (15, 1375919), (37, 557805), (41, 503385), (111, 185935), (123, 167795), (185, 111561), (205, 100677), (555, 37187), (615, 33559), (907, 22755), (1517, 13605), (2721, 7585), (4535, 4551)]