20947605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{199501}}^1$

素因数の和:199516

約数の個数: 16

約数和(自身を含む): 38304384

約数和(自身を除く): 17356779

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 199501, 598503, 997505, 1396507, 2992515, 4189521, 6982535, 20947605]

約数ペア:

[(1, 20947605), (3, 6982535), (5, 4189521), (7, 2992515), (15, 1396507), (21, 997505), (35, 598503), (105, 199501)]