20939864

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{1597}}^1$

素因数の和:1763

約数の個数: 32

約数和(自身を含む): 43146000

約数和(自身を除く): 22206136

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 149, 298, 596, 1192, 1597, 1639, 3194, 3278, 6388, 6556, 12776, 13112, 17567, 35134, 70268, 140536, 237953, 475906, 951812, 1903624, 2617483, 5234966, 10469932, 20939864]

約数ペア:

[(1, 20939864), (2, 10469932), (4, 5234966), (8, 2617483), (11, 1903624), (22, 951812), (44, 475906), (88, 237953), (149, 140536), (298, 70268), (596, 35134), (1192, 17567), (1597, 13112), (1639, 12776), (3194, 6556), (3278, 6388)]