19901224

素因数分解:

$2^3\times 7^1\times {\mathrm{355379}}^1$

素因数の和:355392

約数の個数: 16

約数和(自身を含む): 42645600

約数和(自身を除く): 22744376

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 355379, 710758, 1421516, 2487653, 2843032, 4975306, 9950612, 19901224]

約数ペア:

[(1, 19901224), (2, 9950612), (4, 4975306), (7, 2843032), (8, 2487653), (14, 1421516), (28, 710758), (56, 355379)]