19989872

素因数分解:

$2^4\times 7^1\times {\mathrm{178481}}^1$

素因数の和:178496

約数の個数: 20

約数和(自身を含む): 44263536

約数和(自身を除く): 24273664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 178481, 356962, 713924, 1249367, 1427848, 2498734, 2855696, 4997468, 9994936, 19989872]

約数ペア:

[(1, 19989872), (2, 9994936), (4, 4997468), (7, 2855696), (8, 2498734), (14, 1427848), (16, 1249367), (28, 713924), (56, 356962), (112, 178481)]