19993456

素因数分解:

$2^4\times 7^1\times {\mathrm{178513}}^1$

素因数の和:178528

約数の個数: 20

約数和(自身を含む): 44271472

約数和(自身を除く): 24278016

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 178513, 357026, 714052, 1249591, 1428104, 2499182, 2856208, 4998364, 9996728, 19993456]

約数ペア:

[(1, 19993456), (2, 9996728), (4, 4998364), (7, 2856208), (8, 2499182), (14, 1428104), (16, 1249591), (28, 714052), (56, 357026), (112, 178513)]