20668718

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{39901}}^1$

素因数の和:39947

約数の個数: 16

約数和(自身を含む): 36390624

約数和(自身を除く): 15721906

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 39901, 79802, 279307, 558614, 1476337, 2952674, 10334359, 20668718]

約数ペア:

[(1, 20668718), (2, 10334359), (7, 2952674), (14, 1476337), (37, 558614), (74, 279307), (259, 79802), (518, 39901)]