20489888

素因数分解:

$2^5\times {\mathrm{521}}^1\times {\mathrm{1229}}^1$

素因数の和:1760

約数の個数: 24

約数和(自身を含む): 40449780

約数和(自身を除く): 19959892

約数列:

[1, 2, 4, 8, 16, 32, 521, 1042, 1229, 2084, 2458, 4168, 4916, 8336, 9832, 16672, 19664, 39328, 640309, 1280618, 2561236, 5122472, 10244944, 20489888]

約数ペア:

[(1, 20489888), (2, 10244944), (4, 5122472), (8, 2561236), (16, 1280618), (32, 640309), (521, 39328), (1042, 19664), (1229, 16672), (2084, 9832), (2458, 8336), (4168, 4916)]