19398880

素因数分解:

$2^5\times 5^1\times {\mathrm{263}}^1\times {\mathrm{461}}^1$

素因数の和:739

約数の個数: 48

約数和(自身を含む): 46103904

約数和(自身を除く): 26705024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 263, 461, 526, 922, 1052, 1315, 1844, 2104, 2305, 2630, 3688, 4208, 4610, 5260, 7376, 8416, 9220, 10520, 14752, 18440, 21040, 36880, 42080, 73760, 121243, 242486, 484972, 606215, 969944, 1212430, 1939888, 2424860, 3879776, 4849720, 9699440, 19398880]

約数ペア:

[(1, 19398880), (2, 9699440), (4, 4849720), (5, 3879776), (8, 2424860), (10, 1939888), (16, 1212430), (20, 969944), (32, 606215), (40, 484972), (80, 242486), (160, 121243), (263, 73760), (461, 42080), (526, 36880), (922, 21040), (1052, 18440), (1315, 14752), (1844, 10520), (2104, 9220), (2305, 8416), (2630, 7376), (3688, 5260), (4208, 4610)]