21000453579

素因数分解:

$3^4\times 7^1\times {\mathrm{83}}^1\times {\mathrm{293}}^1\times {\mathrm{1523}}^1$

素因数の和:1918

約数の個数: 80

約数和(自身を含む): 36432329472

約数和(自身を除く): 15431875893

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 83, 189, 249, 293, 567, 581, 747, 879, 1523, 1743, 2051, 2241, 2637, 4569, 5229, 6153, 6723, 7911, 10661, 13707, 15687, 18459, 23733, 24319, 31983, 41121, 47061, 55377, 72957, 95949, 123363, 126409, 166131, 170233, 218871, 287847, 379227, 446239, 510699, 656613, 863541, 884863, 1137681, 1338717, 1532097, 1969839, 2654589, 3123673, 3413043, 4016151, 4596291, 7963767, 9371019, 10239129, 12048453, 13788873, 23891301, 28113057, 36145359, 37037837, 71673903, 84339171, 111113511, 253017513, 259264859, 333340533, 777794577, 1000021599, 2333383731, 3000064797, 7000151193, 21000453579]

約数ペア:

[(1, 21000453579), (3, 7000151193), (7, 3000064797), (9, 2333383731), (21, 1000021599), (27, 777794577), (63, 333340533), (81, 259264859), (83, 253017513), (189, 111113511), (249, 84339171), (293, 71673903), (567, 37037837), (581, 36145359), (747, 28113057), (879, 23891301), (1523, 13788873), (1743, 12048453), (2051, 10239129), (2241, 9371019), (2637, 7963767), (4569, 4596291), (5229, 4016151), (6153, 3413043), (6723, 3123673), (7911, 2654589), (10661, 1969839), (13707, 1532097), (15687, 1338717), (18459, 1137681), (23733, 884863), (24319, 863541), (31983, 656613), (41121, 510699), (47061, 446239), (55377, 379227), (72957, 287847), (95949, 218871), (123363, 170233), (126409, 166131)]