81253081

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{991}}^1$

素因数の和:1081

約数の個数: 32

約数和(自身を含む): 107993088

約数和(自身を除く): 26740007

約数列:

[1, 7, 13, 17, 53, 91, 119, 221, 371, 689, 901, 991, 1547, 4823, 6307, 6937, 11713, 12883, 16847, 52523, 81991, 90181, 117929, 219011, 367661, 682799, 892891, 1533077, 4779593, 6250237, 11607583, 81253081]

約数ペア:

[(1, 81253081), (7, 11607583), (13, 6250237), (17, 4779593), (53, 1533077), (91, 892891), (119, 682799), (221, 367661), (371, 219011), (689, 117929), (901, 90181), (991, 81991), (1547, 52523), (4823, 16847), (6307, 12883), (6937, 11713)]