19997690

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{105251}}^1$

素因数の和:105277

約数の個数: 16

約数和(自身を含む): 37890720

約数和(自身を除く): 17893030

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 105251, 210502, 526255, 1052510, 1999769, 3999538, 9998845, 19997690]

約数ペア:

[(1, 19997690), (2, 9998845), (5, 3999538), (10, 1999769), (19, 1052510), (38, 526255), (95, 210502), (190, 105251)]