21004725

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{40009}}^1$

素因数の和:40029

約数の個数: 24

約数和(自身を含む): 39689920

約数和(自身を除く): 18685195

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 525, 40009, 120027, 200045, 280063, 600135, 840189, 1000225, 1400315, 3000675, 4200945, 7001575, 21004725]

約数ペア:

[(1, 21004725), (3, 7001575), (5, 4200945), (7, 3000675), (15, 1400315), (21, 1000225), (25, 840189), (35, 600135), (75, 280063), (105, 200045), (175, 120027), (525, 40009)]