20740221

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{283}}^1\times {\mathrm{479}}^1$

素因数の和:785

約数の個数: 24

約数和(自身を含む): 31898880

約数和(自身を除く): 11158659

約数列:

[1, 3, 9, 17, 51, 153, 283, 479, 849, 1437, 2547, 4311, 4811, 8143, 14433, 24429, 43299, 73287, 135557, 406671, 1220013, 2304469, 6913407, 20740221]

約数ペア:

[(1, 20740221), (3, 6913407), (9, 2304469), (17, 1220013), (51, 406671), (153, 135557), (283, 73287), (479, 43299), (849, 24429), (1437, 14433), (2547, 8143), (4311, 4811)]