397328638

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{399727}}^1$

素因数の和:399807

約数の個数: 16

約数和(自身を含む): 690729984

約数和(自身を除く): 293401346

約数列:

[1, 2, 7, 14, 71, 142, 497, 994, 399727, 799454, 2798089, 5596178, 28380617, 56761234, 198664319, 397328638]

約数ペア:

[(1, 397328638), (2, 198664319), (7, 56761234), (14, 28380617), (71, 5596178), (142, 2798089), (497, 799454), (994, 399727)]