21690732

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{997}}^1$

素因数の和:1055

約数の個数: 72

約数和(自身を含む): 60526704

約数和(自身を除く): 38835972

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 37, 42, 49, 74, 84, 98, 111, 147, 148, 196, 222, 259, 294, 444, 518, 588, 777, 997, 1036, 1554, 1813, 1994, 2991, 3108, 3626, 3988, 5439, 5982, 6979, 7252, 10878, 11964, 13958, 20937, 21756, 27916, 36889, 41874, 48853, 73778, 83748, 97706, 110667, 146559, 147556, 195412, 221334, 258223, 293118, 442668, 516446, 586236, 774669, 1032892, 1549338, 1807561, 3098676, 3615122, 5422683, 7230244, 10845366, 21690732]

約数ペア:

[(1, 21690732), (2, 10845366), (3, 7230244), (4, 5422683), (6, 3615122), (7, 3098676), (12, 1807561), (14, 1549338), (21, 1032892), (28, 774669), (37, 586236), (42, 516446), (49, 442668), (74, 293118), (84, 258223), (98, 221334), (111, 195412), (147, 147556), (148, 146559), (196, 110667), (222, 97706), (259, 83748), (294, 73778), (444, 48853), (518, 41874), (588, 36889), (777, 27916), (997, 21756), (1036, 20937), (1554, 13958), (1813, 11964), (1994, 10878), (2991, 7252), (3108, 6979), (3626, 5982), (3988, 5439)]