20969468

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 20943172

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 89, 92, 178, 197, 299, 356, 394, 598, 788, 1157, 1196, 2047, 2314, 2561, 4094, 4531, 4628, 5122, 8188, 9062, 10244, 17533, 18124, 26611, 35066, 53222, 58903, 70132, 106444, 117806, 227929, 235612, 403259, 455858, 806518, 911716, 1613036, 5242367, 10484734, 20969468]

約数ペア:

[(1, 20969468), (2, 10484734), (4, 5242367), (13, 1613036), (23, 911716), (26, 806518), (46, 455858), (52, 403259), (89, 235612), (92, 227929), (178, 117806), (197, 106444), (299, 70132), (356, 58903), (394, 53222), (598, 35066), (788, 26611), (1157, 18124), (1196, 17533), (2047, 10244), (2314, 9062), (2561, 8188), (4094, 5122), (4531, 4628)]