19990516

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{54919}}^1$

素因数の和:54943

約数の個数: 24

約数和(自身を含む): 43057280

約数和(自身を除く): 23066764

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 54919, 109838, 219676, 384433, 713947, 768866, 1427894, 1537732, 2855788, 4997629, 9995258, 19990516]

約数ペア:

[(1, 19990516), (2, 9995258), (4, 4997629), (7, 2855788), (13, 1537732), (14, 1427894), (26, 768866), (28, 713947), (52, 384433), (91, 219676), (182, 109838), (364, 54919)]