21856912

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1$

素因数の和:296

約数の個数: 80

約数和(自身を含む): 53603712

約数和(自身を除く): 31746800

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 113, 154, 157, 176, 226, 308, 314, 452, 616, 628, 791, 904, 1099, 1232, 1243, 1256, 1582, 1727, 1808, 2198, 2486, 2512, 3164, 3454, 4396, 4972, 6328, 6908, 8701, 8792, 9944, 12089, 12656, 13816, 17402, 17584, 17741, 19888, 24178, 27632, 34804, 35482, 48356, 69608, 70964, 96712, 124187, 139216, 141928, 193424, 195151, 248374, 283856, 390302, 496748, 780604, 993496, 1366057, 1561208, 1986992, 2732114, 3122416, 5464228, 10928456, 21856912]

約数ペア:

[(1, 21856912), (2, 10928456), (4, 5464228), (7, 3122416), (8, 2732114), (11, 1986992), (14, 1561208), (16, 1366057), (22, 993496), (28, 780604), (44, 496748), (56, 390302), (77, 283856), (88, 248374), (112, 195151), (113, 193424), (154, 141928), (157, 139216), (176, 124187), (226, 96712), (308, 70964), (314, 69608), (452, 48356), (616, 35482), (628, 34804), (791, 27632), (904, 24178), (1099, 19888), (1232, 17741), (1243, 17584), (1256, 17402), (1582, 13816), (1727, 12656), (1808, 12089), (2198, 9944), (2486, 8792), (2512, 8701), (3164, 6908), (3454, 6328), (4396, 4972)]