12817480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^2$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 31256820

約数和(自身を除く): 18439340

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 157, 260, 314, 520, 628, 785, 1256, 1570, 2041, 3140, 4082, 6280, 8164, 10205, 16328, 20410, 24649, 40820, 49298, 81640, 98596, 123245, 197192, 246490, 320437, 492980, 640874, 985960, 1281748, 1602185, 2563496, 3204370, 6408740, 12817480]

約数ペア:

[(1, 12817480), (2, 6408740), (4, 3204370), (5, 2563496), (8, 1602185), (10, 1281748), (13, 985960), (20, 640874), (26, 492980), (40, 320437), (52, 246490), (65, 197192), (104, 123245), (130, 98596), (157, 81640), (260, 49298), (314, 40820), (520, 24649), (628, 20410), (785, 16328), (1256, 10205), (1570, 8164), (2041, 6280), (3140, 4082)]