19979128

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6197}}^1$

素因数の和:6247

約数の個数: 32

約数和(自身を含む): 41650560

約数和(自身を除く): 21671432

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 6197, 12394, 24788, 49576, 80561, 161122, 192107, 322244, 384214, 644488, 768428, 1536856, 2497391, 4994782, 9989564, 19979128]

約数ペア:

[(1, 19979128), (2, 9989564), (4, 4994782), (8, 2497391), (13, 1536856), (26, 768428), (31, 644488), (52, 384214), (62, 322244), (104, 192107), (124, 161122), (248, 80561), (403, 49576), (806, 24788), (1612, 12394), (3224, 6197)]