81564164

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{431}}^1$

素因数の和:497

約数の個数: 72

約数和(自身を含む): 173746944

約数和(自身を除く): 92182780

約数列:

[1, 2, 4, 11, 17, 22, 23, 34, 44, 46, 68, 92, 121, 187, 242, 253, 374, 391, 431, 484, 506, 748, 782, 862, 1012, 1564, 1724, 2057, 2783, 4114, 4301, 4741, 5566, 7327, 8228, 8602, 9482, 9913, 11132, 14654, 17204, 18964, 19826, 29308, 39652, 47311, 52151, 80597, 94622, 104302, 109043, 161194, 168521, 189244, 208604, 218086, 322388, 337042, 436172, 674084, 886567, 1199473, 1773134, 1853731, 2398946, 3546268, 3707462, 4797892, 7414924, 20391041, 40782082, 81564164]

約数ペア:

[(1, 81564164), (2, 40782082), (4, 20391041), (11, 7414924), (17, 4797892), (22, 3707462), (23, 3546268), (34, 2398946), (44, 1853731), (46, 1773134), (68, 1199473), (92, 886567), (121, 674084), (187, 436172), (242, 337042), (253, 322388), (374, 218086), (391, 208604), (431, 189244), (484, 168521), (506, 161194), (748, 109043), (782, 104302), (862, 94622), (1012, 80597), (1564, 52151), (1724, 47311), (2057, 39652), (2783, 29308), (4114, 19826), (4301, 18964), (4741, 17204), (5566, 14654), (7327, 11132), (8228, 9913), (8602, 9482)]