20720656

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{117731}}^1$

素因数の和:117750

約数の個数: 20

約数和(自身を含む): 43796304

約数和(自身を除く): 23075648

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 117731, 235462, 470924, 941848, 1295041, 1883696, 2590082, 5180164, 10360328, 20720656]

約数ペア:

[(1, 20720656), (2, 10360328), (4, 5180164), (8, 2590082), (11, 1883696), (16, 1295041), (22, 941848), (44, 470924), (88, 235462), (176, 117731)]