18409490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{199}}^1$

素因数の和:275

約数の個数: 48

約数和(自身を含む): 37627200

約数和(自身を除く): 19217710

約数列:

[1, 2, 5, 10, 11, 22, 29, 55, 58, 110, 145, 199, 290, 319, 398, 638, 841, 995, 1595, 1682, 1990, 2189, 3190, 4205, 4378, 5771, 8410, 9251, 10945, 11542, 18502, 21890, 28855, 46255, 57710, 63481, 92510, 126962, 167359, 317405, 334718, 634810, 836795, 1673590, 1840949, 3681898, 9204745, 18409490]

約数ペア:

[(1, 18409490), (2, 9204745), (5, 3681898), (10, 1840949), (11, 1673590), (22, 836795), (29, 634810), (55, 334718), (58, 317405), (110, 167359), (145, 126962), (199, 92510), (290, 63481), (319, 57710), (398, 46255), (638, 28855), (841, 21890), (995, 18502), (1595, 11542), (1682, 10945), (1990, 9251), (2189, 8410), (3190, 5771), (4205, 4378)]