20844236

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{271}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 43502592

約数和(自身を除く): 22658356

約数列:

[1, 2, 4, 7, 14, 28, 41, 67, 82, 134, 164, 268, 271, 287, 469, 542, 574, 938, 1084, 1148, 1876, 1897, 2747, 3794, 5494, 7588, 10988, 11111, 18157, 19229, 22222, 36314, 38458, 44444, 72628, 76916, 77777, 127099, 155554, 254198, 311108, 508396, 744437, 1488874, 2977748, 5211059, 10422118, 20844236]

約数ペア:

[(1, 20844236), (2, 10422118), (4, 5211059), (7, 2977748), (14, 1488874), (28, 744437), (41, 508396), (67, 311108), (82, 254198), (134, 155554), (164, 127099), (268, 77777), (271, 76916), (287, 72628), (469, 44444), (542, 38458), (574, 36314), (938, 22222), (1084, 19229), (1148, 18157), (1876, 11111), (1897, 10988), (2747, 7588), (3794, 5494)]