18435280

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{4903}}^1$

素因数の和:4963

約数の個数: 40

約数和(自身を含む): 43782912

約数和(自身を除く): 25347632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 4903, 9806, 19612, 24515, 39224, 49030, 78448, 98060, 196120, 230441, 392240, 460882, 921764, 1152205, 1843528, 2304410, 3687056, 4608820, 9217640, 18435280]

約数ペア:

[(1, 18435280), (2, 9217640), (4, 4608820), (5, 3687056), (8, 2304410), (10, 1843528), (16, 1152205), (20, 921764), (40, 460882), (47, 392240), (80, 230441), (94, 196120), (188, 98060), (235, 78448), (376, 49030), (470, 39224), (752, 24515), (940, 19612), (1880, 9806), (3760, 4903)]