668386047

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1213}}^1\times {\mathrm{1381}}^1$

素因数の和:2623

約数の個数: 32

約数和(自身を含む): 1073758720

約数和(自身を除く): 405372673

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 1213, 1381, 3639, 4143, 8491, 9667, 23047, 25473, 26239, 29001, 69141, 78717, 161329, 183673, 483987, 551019, 1675153, 5025459, 11726071, 31827907, 35178213, 95483721, 222795349, 668386047]

約数ペア:

[(1, 668386047), (3, 222795349), (7, 95483721), (19, 35178213), (21, 31827907), (57, 11726071), (133, 5025459), (399, 1675153), (1213, 551019), (1381, 483987), (3639, 183673), (4143, 161329), (8491, 78717), (9667, 69141), (23047, 29001), (25473, 26239)]