18901420

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{9743}}^1$

素因数の和:9849

約数の個数: 24

約数和(自身を含む): 40106304

約数和(自身を除く): 21204884

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 9743, 19486, 38972, 48715, 97430, 194860, 945071, 1890142, 3780284, 4725355, 9450710, 18901420]

約数ペア:

[(1, 18901420), (2, 9450710), (4, 4725355), (5, 3780284), (10, 1890142), (20, 945071), (97, 194860), (194, 97430), (388, 48715), (485, 38972), (970, 19486), (1940, 9743)]