20405658

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1$

素因数の和:332

約数の個数: 96

約数和(自身を含む): 54008640

約数和(自身を除く): 33602982

約数列:

[1, 2, 3, 6, 7, 13, 14, 19, 21, 26, 38, 39, 42, 49, 57, 78, 91, 98, 114, 133, 147, 182, 247, 266, 273, 281, 294, 399, 494, 546, 562, 637, 741, 798, 843, 931, 1274, 1482, 1686, 1729, 1862, 1911, 1967, 2793, 3458, 3653, 3822, 3934, 5187, 5339, 5586, 5901, 7306, 10374, 10678, 10959, 11802, 12103, 13769, 16017, 21918, 24206, 25571, 27538, 32034, 36309, 37373, 41307, 51142, 69407, 72618, 74746, 76713, 82614, 112119, 138814, 153426, 178997, 208221, 224238, 261611, 357994, 416442, 485849, 523222, 536991, 784833, 971698, 1073982, 1457547, 1569666, 2915094, 3400943, 6801886, 10202829, 20405658]

約数ペア:

[(1, 20405658), (2, 10202829), (3, 6801886), (6, 3400943), (7, 2915094), (13, 1569666), (14, 1457547), (19, 1073982), (21, 971698), (26, 784833), (38, 536991), (39, 523222), (42, 485849), (49, 416442), (57, 357994), (78, 261611), (91, 224238), (98, 208221), (114, 178997), (133, 153426), (147, 138814), (182, 112119), (247, 82614), (266, 76713), (273, 74746), (281, 72618), (294, 69407), (399, 51142), (494, 41307), (546, 37373), (562, 36309), (637, 32034), (741, 27538), (798, 25571), (843, 24206), (931, 21918), (1274, 16017), (1482, 13769), (1686, 12103), (1729, 11802), (1862, 10959), (1911, 10678), (1967, 10374), (2793, 7306), (3458, 5901), (3653, 5586), (3822, 5339), (3934, 5187)]