77857556

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 159264000

約数和(自身を除く): 81406444

約数列:

[1, 2, 4, 7, 14, 28, 89, 157, 178, 199, 314, 356, 398, 623, 628, 796, 1099, 1246, 1393, 2198, 2492, 2786, 4396, 5572, 13973, 17711, 27946, 31243, 35422, 55892, 62486, 70844, 97811, 123977, 124972, 195622, 218701, 247954, 391244, 437402, 495908, 874804, 2780627, 5561254, 11122508, 19464389, 38928778, 77857556]

約数ペア:

[(1, 77857556), (2, 38928778), (4, 19464389), (7, 11122508), (14, 5561254), (28, 2780627), (89, 874804), (157, 495908), (178, 437402), (199, 391244), (314, 247954), (356, 218701), (398, 195622), (623, 124972), (628, 123977), (796, 97811), (1099, 70844), (1246, 62486), (1393, 55892), (2198, 35422), (2492, 31243), (2786, 27946), (4396, 17711), (5572, 13973)]