219039205

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:298

約数の個数: 64

約数和(自身を含む): 341231616

約数和(自身を除く): 122192411

約数列:

[1, 5, 7, 11, 35, 43, 55, 77, 101, 131, 215, 301, 385, 473, 505, 655, 707, 917, 1111, 1441, 1505, 2365, 3311, 3535, 4343, 4585, 5555, 5633, 7205, 7777, 10087, 13231, 16555, 21715, 28165, 30401, 38885, 39431, 47773, 50435, 61963, 66155, 92617, 145541, 152005, 197155, 238865, 309815, 334411, 433741, 463085, 568933, 727705, 1018787, 1672055, 2168705, 2844665, 3982531, 5093935, 6258263, 19912655, 31291315, 43807841, 219039205]

約数ペア:

[(1, 219039205), (5, 43807841), (7, 31291315), (11, 19912655), (35, 6258263), (43, 5093935), (55, 3982531), (77, 2844665), (101, 2168705), (131, 1672055), (215, 1018787), (301, 727705), (385, 568933), (473, 463085), (505, 433741), (655, 334411), (707, 309815), (917, 238865), (1111, 197155), (1441, 152005), (1505, 145541), (2365, 92617), (3311, 66155), (3535, 61963), (4343, 50435), (4585, 47773), (5555, 39431), (5633, 38885), (7205, 30401), (7777, 28165), (10087, 21715), (13231, 16555)]