20274387

素因数分解:

$3^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:121

約数の個数: 64

約数和(自身を含む): 35712000

約数和(自身を除く): 15437613

約数列:

[1, 3, 7, 17, 19, 21, 49, 51, 57, 61, 119, 133, 147, 183, 323, 343, 357, 399, 427, 833, 931, 969, 1029, 1037, 1159, 1281, 2261, 2499, 2793, 2989, 3111, 3477, 5831, 6517, 6783, 7259, 8113, 8967, 15827, 17493, 19551, 19703, 20923, 21777, 24339, 47481, 50813, 56791, 59109, 62769, 110789, 137921, 152439, 170373, 332367, 355691, 397537, 413763, 965447, 1067073, 1192611, 2896341, 6758129, 20274387]

約数ペア:

[(1, 20274387), (3, 6758129), (7, 2896341), (17, 1192611), (19, 1067073), (21, 965447), (49, 413763), (51, 397537), (57, 355691), (61, 332367), (119, 170373), (133, 152439), (147, 137921), (183, 110789), (323, 62769), (343, 59109), (357, 56791), (399, 50813), (427, 47481), (833, 24339), (931, 21777), (969, 20923), (1029, 19703), (1037, 19551), (1159, 17493), (1281, 15827), (2261, 8967), (2499, 8113), (2793, 7259), (2989, 6783), (3111, 6517), (3477, 5831)]