18985617

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1$

素因数の和:363

約数の個数: 64

約数和(自身を含む): 35942400

約数和(自身を除く): 16956783

約数列:

[1, 3, 7, 9, 17, 19, 21, 27, 51, 57, 63, 119, 133, 153, 171, 189, 311, 323, 357, 399, 459, 513, 933, 969, 1071, 1197, 2177, 2261, 2799, 2907, 3213, 3591, 5287, 5909, 6531, 6783, 8397, 8721, 15861, 17727, 19593, 20349, 37009, 41363, 47583, 53181, 58779, 61047, 100453, 111027, 124089, 142749, 159543, 301359, 333081, 372267, 703171, 904077, 999243, 1116801, 2109513, 2712231, 6328539, 18985617]

約数ペア:

[(1, 18985617), (3, 6328539), (7, 2712231), (9, 2109513), (17, 1116801), (19, 999243), (21, 904077), (27, 703171), (51, 372267), (57, 333081), (63, 301359), (119, 159543), (133, 142749), (153, 124089), (171, 111027), (189, 100453), (311, 61047), (323, 58779), (357, 53181), (399, 47583), (459, 41363), (513, 37009), (933, 20349), (969, 19593), (1071, 17727), (1197, 15861), (2177, 8721), (2261, 8397), (2799, 6783), (2907, 6531), (3213, 5909), (3591, 5287)]