15991420

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{8243}}^1$

素因数の和:8349

約数の個数: 24

約数和(自身を含む): 33932304

約数和(自身を除く): 17940884

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 8243, 16486, 32972, 41215, 82430, 164860, 799571, 1599142, 3198284, 3997855, 7995710, 15991420]

約数ペア:

[(1, 15991420), (2, 7995710), (4, 3997855), (5, 3198284), (10, 1599142), (20, 799571), (97, 164860), (194, 82430), (388, 41215), (485, 32972), (970, 16486), (1940, 8243)]