20217267

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 36241920

約数和(自身を除く): 16024653

約数列:

[1, 3, 7, 9, 17, 21, 43, 51, 63, 119, 129, 153, 301, 357, 387, 439, 731, 903, 1071, 1317, 2193, 2709, 3073, 3951, 5117, 6579, 7463, 9219, 15351, 18877, 22389, 27657, 46053, 52241, 56631, 67167, 132139, 156723, 169893, 320909, 396417, 470169, 962727, 1189251, 2246363, 2888181, 6739089, 20217267]

約数ペア:

[(1, 20217267), (3, 6739089), (7, 2888181), (9, 2246363), (17, 1189251), (21, 962727), (43, 470169), (51, 396417), (63, 320909), (119, 169893), (129, 156723), (153, 132139), (301, 67167), (357, 56631), (387, 52241), (439, 46053), (731, 27657), (903, 22389), (1071, 18877), (1317, 15351), (2193, 9219), (2709, 7463), (3073, 6579), (3951, 5117)]