21000545433

素因数分解:

$3^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1001027}}^1$

素因数の和:1001083

約数の個数: 40

約数和(自身を含む): 36821813952

約数和(自身を除く): 15821268519

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 81, 111, 189, 259, 333, 567, 777, 999, 2331, 2997, 6993, 20979, 1001027, 3003081, 7007189, 9009243, 21021567, 27027729, 37037999, 63064701, 81083187, 111113997, 189194103, 259265993, 333341991, 567582309, 777797979, 1000025973, 2333393937, 3000077919, 7000181811, 21000545433]

約数ペア:

[(1, 21000545433), (3, 7000181811), (7, 3000077919), (9, 2333393937), (21, 1000025973), (27, 777797979), (37, 567582309), (63, 333341991), (81, 259265993), (111, 189194103), (189, 111113997), (259, 81083187), (333, 63064701), (567, 37037999), (777, 27027729), (999, 21021567), (2331, 9009243), (2997, 7007189), (6993, 3003081), (20979, 1001027)]