19779568

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72719}}^1$

素因数の和:72744

約数の個数: 20

約数和(自身を含む): 40577760

約数和(自身を除く): 20798192

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72719, 145438, 290876, 581752, 1163504, 1236223, 2472446, 4944892, 9889784, 19779568]

約数ペア:

[(1, 19779568), (2, 9889784), (4, 4944892), (8, 2472446), (16, 1236223), (17, 1163504), (34, 581752), (68, 290876), (136, 145438), (272, 72719)]