21330135

素因数分解:

$3^4\times 5^1\times {\mathrm{52667}}^1$

素因数の和:52684

約数の個数: 20

約数和(自身を含む): 38236968

約数和(自身を除く): 16906833

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 52667, 158001, 263335, 474003, 790005, 1422009, 2370015, 4266027, 7110045, 21330135]

約数ペア:

[(1, 21330135), (3, 7110045), (5, 4266027), (9, 2370015), (15, 1422009), (27, 790005), (45, 474003), (81, 263335), (135, 158001), (405, 52667)]