20866612

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 41771520

約数和(自身を除く): 20904908

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 73, 92, 146, 239, 292, 299, 478, 598, 949, 956, 1196, 1679, 1898, 3107, 3358, 3796, 5497, 6214, 6716, 10994, 12428, 17447, 21827, 21988, 34894, 43654, 69788, 71461, 87308, 142922, 226811, 285844, 401281, 453622, 802562, 907244, 1605124, 5216653, 10433306, 20866612]

約数ペア:

[(1, 20866612), (2, 10433306), (4, 5216653), (13, 1605124), (23, 907244), (26, 802562), (46, 453622), (52, 401281), (73, 285844), (92, 226811), (146, 142922), (239, 87308), (292, 71461), (299, 69788), (478, 43654), (598, 34894), (949, 21988), (956, 21827), (1196, 17447), (1679, 12428), (1898, 10994), (3107, 6716), (3358, 6214), (3796, 5497)]