21000945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{200009}}^1$

素因数の和:200024

約数の個数: 16

約数和(自身を含む): 38401920

約数和(自身を除く): 17400975

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 200009, 600027, 1000045, 1400063, 3000135, 4200189, 7000315, 21000945]

約数ペア:

[(1, 21000945), (3, 7000315), (5, 4200189), (7, 3000135), (15, 1400063), (21, 1000045), (35, 600027), (105, 200009)]