21420285

素因数分解:

$3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{3671}}^1$

素因数の和:4068

約数の個数: 16

約数和(自身を含む): 34369920

約数和(自身を除く): 12949635

約数列:

[1, 3, 5, 15, 389, 1167, 1945, 3671, 5835, 11013, 18355, 55065, 1428019, 4284057, 7140095, 21420285]

約数ペア:

[(1, 21420285), (3, 7140095), (5, 4284057), (15, 1428019), (389, 55065), (1167, 18355), (1945, 11013), (3671, 5835)]