21021327

素因数分解:

$3^2\times {\mathrm{83}}^1\times {\mathrm{107}}^1\times {\mathrm{263}}^1$

素因数の和:459

約数の個数: 24

約数和(自身を含む): 31135104

約数和(自身を除く): 10113777

約数列:

[1, 3, 9, 83, 107, 249, 263, 321, 747, 789, 963, 2367, 8881, 21829, 26643, 28141, 65487, 79929, 84423, 196461, 253269, 2335703, 7007109, 21021327]

約数ペア:

[(1, 21021327), (3, 7007109), (9, 2335703), (83, 253269), (107, 196461), (249, 84423), (263, 79929), (321, 65487), (747, 28141), (789, 26643), (963, 21829), (2367, 8881)]