205127559

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1637}}^1$

素因数の和:1686

約数の個数: 80

約数和(自身を含む): 399567168

約数和(自身を除く): 194439609

約数列:

[1, 3, 7, 9, 13, 17, 21, 27, 39, 51, 63, 81, 91, 117, 119, 153, 189, 221, 273, 351, 357, 459, 567, 663, 819, 1053, 1071, 1377, 1547, 1637, 1989, 2457, 3213, 4641, 4911, 5967, 7371, 9639, 11459, 13923, 14733, 17901, 21281, 27829, 34377, 41769, 44199, 63843, 83487, 103131, 125307, 132597, 148967, 191529, 194803, 250461, 309393, 361777, 446901, 574587, 584409, 751383, 928179, 1085331, 1340703, 1723761, 1753227, 2254149, 2532439, 3255993, 4022109, 5259681, 7597317, 9767979, 12066327, 15779043, 22791951, 29303937, 68375853, 205127559]

約数ペア:

[(1, 205127559), (3, 68375853), (7, 29303937), (9, 22791951), (13, 15779043), (17, 12066327), (21, 9767979), (27, 7597317), (39, 5259681), (51, 4022109), (63, 3255993), (81, 2532439), (91, 2254149), (117, 1753227), (119, 1723761), (153, 1340703), (189, 1085331), (221, 928179), (273, 751383), (351, 584409), (357, 574587), (459, 446901), (567, 361777), (663, 309393), (819, 250461), (1053, 194803), (1071, 191529), (1377, 148967), (1547, 132597), (1637, 125307), (1989, 103131), (2457, 83487), (3213, 63843), (4641, 44199), (4911, 41769), (5967, 34377), (7371, 27829), (9639, 21281), (11459, 17901), (13923, 14733)]