20745608

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4639}}^1$

素因数の和:4701

約数の個数: 32

約数和(自身を含む): 42873600

約数和(自身を除く): 22127992

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4472, 4639, 9278, 18556, 37112, 60307, 120614, 199477, 241228, 398954, 482456, 797908, 1595816, 2593201, 5186402, 10372804, 20745608]

約数ペア:

[(1, 20745608), (2, 10372804), (4, 5186402), (8, 2593201), (13, 1595816), (26, 797908), (43, 482456), (52, 398954), (86, 241228), (104, 199477), (172, 120614), (344, 60307), (559, 37112), (1118, 18556), (2236, 9278), (4472, 4639)]