21397395

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{19541}}^1$

素因数の和:19622

約数の個数: 16

約数和(自身を含む): 34706592

約数和(自身を除く): 13309197

約数列:

[1, 3, 5, 15, 73, 219, 365, 1095, 19541, 58623, 97705, 293115, 1426493, 4279479, 7132465, 21397395]

約数ペア:

[(1, 21397395), (3, 7132465), (5, 4279479), (15, 1426493), (73, 293115), (219, 97705), (365, 58623), (1095, 19541)]