217491387

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{307}}^1\times {\mathrm{479}}^1$

素因数の和:835

約数の個数: 32

約数和(自身を含む): 319334400

約数和(自身を除く): 101843013

約数列:

[1, 3, 17, 29, 51, 87, 307, 479, 493, 921, 1437, 1479, 5219, 8143, 8903, 13891, 15657, 24429, 26709, 41673, 147053, 151351, 236147, 441159, 454053, 708441, 2499901, 4264537, 7499703, 12793611, 72497129, 217491387]

約数ペア:

[(1, 217491387), (3, 72497129), (17, 12793611), (29, 7499703), (51, 4264537), (87, 2499901), (307, 708441), (479, 454053), (493, 441159), (921, 236147), (1437, 151351), (1479, 147053), (5219, 41673), (8143, 26709), (8903, 24429), (13891, 15657)]