20961948

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{971}}^1$

素因数の和:1242

約数の個数: 48

約数和(自身を含む): 56173824

約数和(自身を除く): 35211876

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 257, 514, 771, 971, 1028, 1542, 1799, 1942, 2913, 3084, 3598, 3884, 5397, 5826, 6797, 7196, 10794, 11652, 13594, 20391, 21588, 27188, 40782, 81564, 249547, 499094, 748641, 998188, 1497282, 1746829, 2994564, 3493658, 5240487, 6987316, 10480974, 20961948]

約数ペア:

[(1, 20961948), (2, 10480974), (3, 6987316), (4, 5240487), (6, 3493658), (7, 2994564), (12, 1746829), (14, 1497282), (21, 998188), (28, 748641), (42, 499094), (84, 249547), (257, 81564), (514, 40782), (771, 27188), (971, 21588), (1028, 20391), (1542, 13594), (1799, 11652), (1942, 10794), (2913, 7196), (3084, 6797), (3598, 5826), (3884, 5397)]