20991732

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4003}}^1$

素因数の和:4052

約数の個数: 48

約数和(自身を含む): 53813760

約数和(自身を除く): 32822028

約数列:

[1, 2, 3, 4, 6, 12, 19, 23, 38, 46, 57, 69, 76, 92, 114, 138, 228, 276, 437, 874, 1311, 1748, 2622, 4003, 5244, 8006, 12009, 16012, 24018, 48036, 76057, 92069, 152114, 184138, 228171, 276207, 304228, 368276, 456342, 552414, 912684, 1104828, 1749311, 3498622, 5247933, 6997244, 10495866, 20991732]

約数ペア:

[(1, 20991732), (2, 10495866), (3, 6997244), (4, 5247933), (6, 3498622), (12, 1749311), (19, 1104828), (23, 912684), (38, 552414), (46, 456342), (57, 368276), (69, 304228), (76, 276207), (92, 228171), (114, 184138), (138, 152114), (228, 92069), (276, 76057), (437, 48036), (874, 24018), (1311, 16012), (1748, 12009), (2622, 8006), (4003, 5244)]