19941285

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2087}}^1$

素因数の和:2122

約数の個数: 48

約数和(自身を含む): 39989376

約数和(自身を除く): 20048091

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 49, 65, 91, 105, 147, 195, 245, 273, 455, 637, 735, 1365, 1911, 2087, 3185, 6261, 9555, 10435, 14609, 27131, 31305, 43827, 73045, 81393, 102263, 135655, 189917, 219135, 306789, 406965, 511315, 569751, 949585, 1329419, 1533945, 2848755, 3988257, 6647095, 19941285]

約数ペア:

[(1, 19941285), (3, 6647095), (5, 3988257), (7, 2848755), (13, 1533945), (15, 1329419), (21, 949585), (35, 569751), (39, 511315), (49, 406965), (65, 306789), (91, 219135), (105, 189917), (147, 135655), (195, 102263), (245, 81393), (273, 73045), (455, 43827), (637, 31305), (735, 27131), (1365, 14609), (1911, 10435), (2087, 9555), (3185, 6261)]