19867988

素因数分解:

$2^2\times 7^1\times {\mathrm{313}}^1\times {\mathrm{2267}}^1$

素因数の和:2591

約数の個数: 24

約数和(自身を含む): 39880512

約数和(自身を除く): 20012524

約数列:

[1, 2, 4, 7, 14, 28, 313, 626, 1252, 2191, 2267, 4382, 4534, 8764, 9068, 15869, 31738, 63476, 709571, 1419142, 2838284, 4966997, 9933994, 19867988]

約数ペア:

[(1, 19867988), (2, 9933994), (4, 4966997), (7, 2838284), (14, 1419142), (28, 709571), (313, 63476), (626, 31738), (1252, 15869), (2191, 9068), (2267, 8764), (4382, 4534)]