17985740

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 38986752

約数和(自身を除く): 21001012

約数列:

[1, 2, 4, 5, 10, 20, 73, 97, 127, 146, 194, 254, 292, 365, 388, 485, 508, 635, 730, 970, 1270, 1460, 1940, 2540, 7081, 9271, 12319, 14162, 18542, 24638, 28324, 35405, 37084, 46355, 49276, 61595, 70810, 92710, 123190, 141620, 185420, 246380, 899287, 1798574, 3597148, 4496435, 8992870, 17985740]

約数ペア:

[(1, 17985740), (2, 8992870), (4, 4496435), (5, 3597148), (10, 1798574), (20, 899287), (73, 246380), (97, 185420), (127, 141620), (146, 123190), (194, 92710), (254, 70810), (292, 61595), (365, 49276), (388, 46355), (485, 37084), (508, 35405), (635, 28324), (730, 24638), (970, 18542), (1270, 14162), (1460, 12319), (1940, 9271), (2540, 7081)]