2021985

素因数分解:

$3^2\times 5^1\times 7^3\times {\mathrm{131}}^1$

素因数の和:163

約数の個数: 48

約数和(自身を含む): 4118400

約数和(自身を除く): 2096415

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 131, 147, 245, 315, 343, 393, 441, 655, 735, 917, 1029, 1179, 1715, 1965, 2205, 2751, 3087, 4585, 5145, 5895, 6419, 8253, 13755, 15435, 19257, 32095, 41265, 44933, 57771, 96285, 134799, 224665, 288855, 404397, 673995, 2021985]

約数ペア:

[(1, 2021985), (3, 673995), (5, 404397), (7, 288855), (9, 224665), (15, 134799), (21, 96285), (35, 57771), (45, 44933), (49, 41265), (63, 32095), (105, 19257), (131, 15435), (147, 13755), (245, 8253), (315, 6419), (343, 5895), (393, 5145), (441, 4585), (655, 3087), (735, 2751), (917, 2205), (1029, 1965), (1179, 1715)]