19554820

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 23119868

約数列:

[1, 2, 4, 5, 10, 20, 47, 71, 94, 142, 188, 235, 284, 293, 355, 470, 586, 710, 940, 1172, 1420, 1465, 2930, 3337, 5860, 6674, 13348, 13771, 16685, 20803, 27542, 33370, 41606, 55084, 66740, 68855, 83212, 104015, 137710, 208030, 275420, 416060, 977741, 1955482, 3910964, 4888705, 9777410, 19554820]

約数ペア:

[(1, 19554820), (2, 9777410), (4, 4888705), (5, 3910964), (10, 1955482), (20, 977741), (47, 416060), (71, 275420), (94, 208030), (142, 137710), (188, 104015), (235, 83212), (284, 68855), (293, 66740), (355, 55084), (470, 41606), (586, 33370), (710, 27542), (940, 20803), (1172, 16685), (1420, 13771), (1465, 13348), (2930, 6674), (3337, 5860)]