21000891303

素因数分解:

$3^6\times 7^1\times {\mathrm{43}}^1\times {\mathrm{95707}}^1$

素因数の和:95775

約数の個数: 56

約数和(自身を含む): 36822313088

約数和(自身を除く): 15821421785

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 243, 301, 387, 567, 729, 903, 1161, 1701, 2709, 3483, 5103, 8127, 10449, 24381, 31347, 73143, 95707, 219429, 287121, 669949, 861363, 2009847, 2584089, 4115401, 6029541, 7752267, 12346203, 18088623, 23256801, 28807807, 37038609, 54265869, 69770403, 86423421, 111115827, 162797607, 259270263, 333347481, 488392821, 777810789, 1000042443, 2333432367, 3000127329, 7000297101, 21000891303]

約数ペア:

[(1, 21000891303), (3, 7000297101), (7, 3000127329), (9, 2333432367), (21, 1000042443), (27, 777810789), (43, 488392821), (63, 333347481), (81, 259270263), (129, 162797607), (189, 111115827), (243, 86423421), (301, 69770403), (387, 54265869), (567, 37038609), (729, 28807807), (903, 23256801), (1161, 18088623), (1701, 12346203), (2709, 7752267), (3483, 6029541), (5103, 4115401), (8127, 2584089), (10449, 2009847), (24381, 861363), (31347, 669949), (73143, 287121), (95707, 219429)]