20399388

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{277}}^1$

素因数の和:339

約数の個数: 72

約数和(自身を含む): 53382672

約数和(自身を除く): 32983284

約数列:

[1, 2, 3, 4, 6, 12, 17, 19, 34, 38, 51, 57, 68, 76, 102, 114, 204, 228, 277, 323, 361, 554, 646, 722, 831, 969, 1083, 1108, 1292, 1444, 1662, 1938, 2166, 3324, 3876, 4332, 4709, 5263, 6137, 9418, 10526, 12274, 14127, 15789, 18411, 18836, 21052, 24548, 28254, 31578, 36822, 56508, 63156, 73644, 89471, 99997, 178942, 199994, 268413, 299991, 357884, 399988, 536826, 599982, 1073652, 1199964, 1699949, 3399898, 5099847, 6799796, 10199694, 20399388]

約数ペア:

[(1, 20399388), (2, 10199694), (3, 6799796), (4, 5099847), (6, 3399898), (12, 1699949), (17, 1199964), (19, 1073652), (34, 599982), (38, 536826), (51, 399988), (57, 357884), (68, 299991), (76, 268413), (102, 199994), (114, 178942), (204, 99997), (228, 89471), (277, 73644), (323, 63156), (361, 56508), (554, 36822), (646, 31578), (722, 28254), (831, 24548), (969, 21052), (1083, 18836), (1108, 18411), (1292, 15789), (1444, 14127), (1662, 12274), (1938, 10526), (2166, 9418), (3324, 6137), (3876, 5263), (4332, 4709)]