20319490

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28619}}^1$

素因数の和:28697

約数の個数: 16

約数和(自身を含む): 37091520

約数和(自身を除く): 16772030

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 28619, 57238, 143095, 286190, 2031949, 4063898, 10159745, 20319490]

約数ペア:

[(1, 20319490), (2, 10159745), (5, 4063898), (10, 2031949), (71, 286190), (142, 143095), (355, 57238), (710, 28619)]