20585691

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:225

約数の個数: 64

約数和(自身を含む): 38016000

約数和(自身を除く): 17430309

約数列:

[1, 3, 7, 9, 17, 21, 27, 43, 51, 63, 119, 129, 149, 153, 189, 301, 357, 387, 447, 459, 731, 903, 1043, 1071, 1161, 1341, 2193, 2533, 2709, 3129, 3213, 4023, 5117, 6407, 6579, 7599, 8127, 9387, 15351, 17731, 19221, 19737, 22797, 28161, 44849, 46053, 53193, 57663, 68391, 108919, 134547, 138159, 159579, 172989, 326757, 403641, 478737, 762433, 980271, 1210923, 2287299, 2940813, 6861897, 20585691]

約数ペア:

[(1, 20585691), (3, 6861897), (7, 2940813), (9, 2287299), (17, 1210923), (21, 980271), (27, 762433), (43, 478737), (51, 403641), (63, 326757), (119, 172989), (129, 159579), (149, 138159), (153, 134547), (189, 108919), (301, 68391), (357, 57663), (387, 53193), (447, 46053), (459, 44849), (731, 28161), (903, 22797), (1043, 19737), (1071, 19221), (1161, 17731), (1341, 15351), (2193, 9387), (2533, 8127), (2709, 7599), (3129, 6579), (3213, 6407), (4023, 5117)]