20654828

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{347}}^1\times {\mathrm{647}}^1$

素因数の和:1021

約数の個数: 24

約数和(自身を含む): 37884672

約数和(自身を除く): 17229844

約数列:

[1, 2, 4, 23, 46, 92, 347, 647, 694, 1294, 1388, 2588, 7981, 14881, 15962, 29762, 31924, 59524, 224509, 449018, 898036, 5163707, 10327414, 20654828]

約数ペア:

[(1, 20654828), (2, 10327414), (4, 5163707), (23, 898036), (46, 449018), (92, 224509), (347, 59524), (647, 31924), (694, 29762), (1294, 15962), (1388, 14881), (2588, 7981)]