211320109

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:362

約数の個数: 64

約数和(自身を含む): 307077120

約数和(自身を除く): 95757011

約数列:

[1, 7, 11, 13, 19, 41, 77, 91, 133, 143, 209, 247, 271, 287, 451, 533, 779, 1001, 1463, 1729, 1897, 2717, 2981, 3157, 3523, 3731, 5149, 5453, 5863, 8569, 10127, 11111, 19019, 20867, 24661, 36043, 38753, 41041, 56639, 59983, 66937, 70889, 77777, 111397, 122221, 144443, 211109, 271271, 396473, 468559, 736307, 779779, 855547, 1011101, 1477763, 1588873, 2322199, 2744417, 5154149, 11122111, 16255393, 19210919, 30188587, 211320109]

約数ペア:

[(1, 211320109), (7, 30188587), (11, 19210919), (13, 16255393), (19, 11122111), (41, 5154149), (77, 2744417), (91, 2322199), (133, 1588873), (143, 1477763), (209, 1011101), (247, 855547), (271, 779779), (287, 736307), (451, 468559), (533, 396473), (779, 271271), (1001, 211109), (1463, 144443), (1729, 122221), (1897, 111397), (2717, 77777), (2981, 70889), (3157, 66937), (3523, 59983), (3731, 56639), (5149, 41041), (5453, 38753), (5863, 36043), (8569, 24661), (10127, 20867), (11111, 19019)]