20864193

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{21139}}^1$

素因数の和:21196

約数の個数: 16

約数和(自身を含む): 32471040

約数和(自身を除く): 11606847

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 21139, 63417, 147973, 443919, 993533, 2980599, 6954731, 20864193]

約数ペア:

[(1, 20864193), (3, 6954731), (7, 2980599), (21, 993533), (47, 443919), (141, 147973), (329, 63417), (987, 21139)]