20487558

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:421

約数の個数: 64

約数和(自身を含む): 50964480

約数和(自身を除く): 30476922

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 157, 182, 239, 273, 314, 471, 478, 546, 717, 942, 1099, 1434, 1673, 2041, 2198, 3107, 3297, 3346, 4082, 5019, 6123, 6214, 6594, 9321, 10038, 12246, 14287, 18642, 21749, 28574, 37523, 42861, 43498, 65247, 75046, 85722, 112569, 130494, 225138, 262661, 487799, 525322, 787983, 975598, 1463397, 1575966, 2926794, 3414593, 6829186, 10243779, 20487558]

約数ペア:

[(1, 20487558), (2, 10243779), (3, 6829186), (6, 3414593), (7, 2926794), (13, 1575966), (14, 1463397), (21, 975598), (26, 787983), (39, 525322), (42, 487799), (78, 262661), (91, 225138), (157, 130494), (182, 112569), (239, 85722), (273, 75046), (314, 65247), (471, 43498), (478, 42861), (546, 37523), (717, 28574), (942, 21749), (1099, 18642), (1434, 14287), (1673, 12246), (2041, 10038), (2198, 9321), (3107, 6594), (3297, 6214), (3346, 6123), (4082, 5019)]