18939974

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1\times {\mathrm{907}}^1$

素因数の和:1159

約数の個数: 16

約数和(自身を含む): 29125008

約数和(自身を除く): 10185034

約数列:

[1, 2, 53, 106, 197, 394, 907, 1814, 10441, 20882, 48071, 96142, 178679, 357358, 9469987, 18939974]

約数ペア:

[(1, 18939974), (2, 9469987), (53, 357358), (106, 178679), (197, 96142), (394, 48071), (907, 20882), (1814, 10441)]