18991792

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{62473}}^1$

素因数の和:62500

約数の個数: 20

約数和(自身を含む): 38733880

約数和(自身を除く): 19742088

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 62473, 124946, 249892, 499784, 999568, 1186987, 2373974, 4747948, 9495896, 18991792]

約数ペア:

[(1, 18991792), (2, 9495896), (4, 4747948), (8, 2373974), (16, 1186987), (19, 999568), (38, 499784), (76, 249892), (152, 124946), (304, 62473)]