17972405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 24772608

約数和(自身を除く): 6800203

約数列:

[1, 5, 11, 31, 55, 83, 127, 155, 341, 415, 635, 913, 1397, 1705, 2573, 3937, 4565, 6985, 10541, 12865, 19685, 28303, 43307, 52705, 115951, 141515, 216535, 326771, 579755, 1633855, 3594481, 17972405]

約数ペア:

[(1, 17972405), (5, 3594481), (11, 1633855), (31, 579755), (55, 326771), (83, 216535), (127, 141515), (155, 115951), (341, 52705), (415, 43307), (635, 28303), (913, 19685), (1397, 12865), (1705, 10541), (2573, 6985), (3937, 4565)]