165720565

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 216599040

約数和(自身を除く): 50878475

約数列:

[1, 5, 19, 41, 95, 157, 205, 271, 779, 785, 1355, 2983, 3895, 5149, 6437, 11111, 14915, 25745, 32185, 42547, 55555, 122303, 211109, 212735, 611515, 808393, 1055545, 1744427, 4041965, 8722135, 33144113, 165720565]

約数ペア:

[(1, 165720565), (5, 33144113), (19, 8722135), (41, 4041965), (95, 1744427), (157, 1055545), (205, 808393), (271, 611515), (779, 212735), (785, 211109), (1355, 122303), (2983, 55555), (3895, 42547), (5149, 32185), (6437, 25745), (11111, 14915)]