19881645

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{189349}}^1$

素因数の和:189364

約数の個数: 16

約数和(自身を含む): 36355200

約数和(自身を除く): 16473555

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 189349, 568047, 946745, 1325443, 2840235, 3976329, 6627215, 19881645]

約数ペア:

[(1, 19881645), (3, 6627215), (5, 3976329), (7, 2840235), (15, 1325443), (21, 946745), (35, 568047), (105, 189349)]