20977731

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:464

約数の個数: 32

約数和(自身を含む): 32624640

約数和(自身を除く): 11646909

約数列:

[1, 3, 9, 27, 31, 71, 93, 213, 279, 353, 639, 837, 1059, 1917, 2201, 3177, 6603, 9531, 10943, 19809, 25063, 32829, 59427, 75189, 98487, 225567, 295461, 676701, 776953, 2330859, 6992577, 20977731]

約数ペア:

[(1, 20977731), (3, 6992577), (9, 2330859), (27, 776953), (31, 676701), (71, 295461), (93, 225567), (213, 98487), (279, 75189), (353, 59427), (639, 32829), (837, 25063), (1059, 19809), (1917, 10943), (2201, 9531), (3177, 6603)]