20804416

素因数分解:

$2^6\times {\mathrm{61}}^1\times {\mathrm{73}}^2$

素因数の和:219

約数の個数: 42

約数和(自身を含む): 42543222

約数和(自身を除く): 21738806

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 73, 122, 146, 244, 292, 488, 584, 976, 1168, 1952, 2336, 3904, 4453, 4672, 5329, 8906, 10658, 17812, 21316, 35624, 42632, 71248, 85264, 142496, 170528, 284992, 325069, 341056, 650138, 1300276, 2600552, 5201104, 10402208, 20804416]

約数ペア:

[(1, 20804416), (2, 10402208), (4, 5201104), (8, 2600552), (16, 1300276), (32, 650138), (61, 341056), (64, 325069), (73, 284992), (122, 170528), (146, 142496), (244, 85264), (292, 71248), (488, 42632), (584, 35624), (976, 21316), (1168, 17812), (1952, 10658), (2336, 8906), (3904, 5329), (4453, 4672)]