15721496973

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1559}}^1\times {\mathrm{1759}}^1$

素因数の和:3351

約数の個数: 72

約数和(自身を含む): 28482854400

約数和(自身を除く): 12761357427

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 441, 637, 819, 1559, 1759, 1911, 4677, 5277, 5733, 10913, 12313, 14031, 15831, 20267, 22867, 32739, 36939, 60801, 68601, 76391, 86191, 98217, 110817, 141869, 160069, 182403, 205803, 229173, 258573, 425607, 480207, 687519, 775719, 993083, 1120483, 1276821, 1440621, 2742281, 2979249, 3361449, 8226843, 8937747, 10084347, 19195967, 24680529, 35649653, 57587901, 106948959, 134371769, 172763703, 249547571, 320846877, 403115307, 748642713, 1209345921, 1746832997, 2245928139, 5240498991, 15721496973]

約数ペア:

[(1, 15721496973), (3, 5240498991), (7, 2245928139), (9, 1746832997), (13, 1209345921), (21, 748642713), (39, 403115307), (49, 320846877), (63, 249547571), (91, 172763703), (117, 134371769), (147, 106948959), (273, 57587901), (441, 35649653), (637, 24680529), (819, 19195967), (1559, 10084347), (1759, 8937747), (1911, 8226843), (4677, 3361449), (5277, 2979249), (5733, 2742281), (10913, 1440621), (12313, 1276821), (14031, 1120483), (15831, 993083), (20267, 775719), (22867, 687519), (32739, 480207), (36939, 425607), (60801, 258573), (68601, 229173), (76391, 205803), (86191, 182403), (98217, 160069), (110817, 141869)]