18886805

素因数分解:

$5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{607}}^1$

素因数の和:753

約数の個数: 24

約数和(自身を含む): 26615808

約数和(自身を除く): 7729003

約数列:

[1, 5, 7, 35, 49, 127, 245, 607, 635, 889, 3035, 4249, 4445, 6223, 21245, 29743, 31115, 77089, 148715, 385445, 539623, 2698115, 3777361, 18886805]

約数ペア:

[(1, 18886805), (5, 3777361), (7, 2698115), (35, 539623), (49, 385445), (127, 148715), (245, 77089), (607, 31115), (635, 29743), (889, 21245), (3035, 6223), (4249, 4445)]