19770723

素因数分解:

$3^5\times 7^1\times {\mathrm{59}}^1\times {\mathrm{197}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 34594560

約数和(自身を除く): 14823837

約数列:

[1, 3, 7, 9, 21, 27, 59, 63, 81, 177, 189, 197, 243, 413, 531, 567, 591, 1239, 1379, 1593, 1701, 1773, 3717, 4137, 4779, 5319, 11151, 11623, 12411, 14337, 15957, 33453, 34869, 37233, 47871, 81361, 100359, 104607, 111699, 244083, 313821, 335097, 732249, 941463, 2196747, 2824389, 6590241, 19770723]

約数ペア:

[(1, 19770723), (3, 6590241), (7, 2824389), (9, 2196747), (21, 941463), (27, 732249), (59, 335097), (63, 313821), (81, 244083), (177, 111699), (189, 104607), (197, 100359), (243, 81361), (413, 47871), (531, 37233), (567, 34869), (591, 33453), (1239, 15957), (1379, 14337), (1593, 12411), (1701, 11623), (1773, 11151), (3717, 5319), (4137, 4779)]