21000315

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{200003}}^1$

素因数の和:200018

約数の個数: 16

約数和(自身を含む): 38400768

約数和(自身を除く): 17400453

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 200003, 600009, 1000015, 1400021, 3000045, 4200063, 7000105, 21000315]

約数ペア:

[(1, 21000315), (3, 7000105), (5, 4200063), (7, 3000045), (15, 1400021), (21, 1000015), (35, 600009), (105, 200003)]