19939815

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{9043}}^1$

素因数の和:9068

約数の個数: 36

約数和(自身を含む): 40209624

約数和(自身を除く): 20269809

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205, 9043, 27129, 45215, 63301, 81387, 135645, 189903, 316505, 406935, 443107, 569709, 949515, 1329321, 2215535, 2848545, 3987963, 6646605, 19939815]

約数ペア:

[(1, 19939815), (3, 6646605), (5, 3987963), (7, 2848545), (9, 2215535), (15, 1329321), (21, 949515), (35, 569709), (45, 443107), (49, 406935), (63, 316505), (105, 189903), (147, 135645), (245, 81387), (315, 63301), (441, 45215), (735, 27129), (2205, 9043)]