20428884

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{313}}^1$

素因数の和:374

約数の個数: 108

約数和(自身を含む): 61891284

約数和(自身を除く): 41462400

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 37, 42, 49, 63, 74, 84, 98, 111, 126, 147, 148, 196, 222, 252, 259, 294, 313, 333, 441, 444, 518, 588, 626, 666, 777, 882, 939, 1036, 1252, 1332, 1554, 1764, 1813, 1878, 2191, 2331, 2817, 3108, 3626, 3756, 4382, 4662, 5439, 5634, 6573, 7252, 8764, 9324, 10878, 11268, 11581, 13146, 15337, 16317, 19719, 21756, 23162, 26292, 30674, 32634, 34743, 39438, 46011, 46324, 61348, 65268, 69486, 78876, 81067, 92022, 104229, 138033, 138972, 162134, 184044, 208458, 243201, 276066, 324268, 416916, 486402, 552132, 567469, 729603, 972804, 1134938, 1459206, 1702407, 2269876, 2918412, 3404814, 5107221, 6809628, 10214442, 20428884]

約数ペア:

[(1, 20428884), (2, 10214442), (3, 6809628), (4, 5107221), (6, 3404814), (7, 2918412), (9, 2269876), (12, 1702407), (14, 1459206), (18, 1134938), (21, 972804), (28, 729603), (36, 567469), (37, 552132), (42, 486402), (49, 416916), (63, 324268), (74, 276066), (84, 243201), (98, 208458), (111, 184044), (126, 162134), (147, 138972), (148, 138033), (196, 104229), (222, 92022), (252, 81067), (259, 78876), (294, 69486), (313, 65268), (333, 61348), (441, 46324), (444, 46011), (518, 39438), (588, 34743), (626, 32634), (666, 30674), (777, 26292), (882, 23162), (939, 21756), (1036, 19719), (1252, 16317), (1332, 15337), (1554, 13146), (1764, 11581), (1813, 11268), (1878, 10878), (2191, 9324), (2331, 8764), (2817, 7252), (3108, 6573), (3626, 5634), (3756, 5439), (4382, 4662)]