18421988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{211}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 36898176

約数和(自身を除く): 18476188

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 73, 92, 146, 211, 292, 299, 422, 598, 844, 949, 1196, 1679, 1898, 2743, 3358, 3796, 4853, 5486, 6716, 9706, 10972, 15403, 19412, 21827, 30806, 43654, 61612, 63089, 87308, 126178, 200239, 252356, 354269, 400478, 708538, 800956, 1417076, 4605497, 9210994, 18421988]

約数ペア:

[(1, 18421988), (2, 9210994), (4, 4605497), (13, 1417076), (23, 800956), (26, 708538), (46, 400478), (52, 354269), (73, 252356), (92, 200239), (146, 126178), (211, 87308), (292, 63089), (299, 61612), (422, 43654), (598, 30806), (844, 21827), (949, 19412), (1196, 15403), (1679, 10972), (1898, 9706), (2743, 6716), (3358, 5486), (3796, 4853)]