20405655556

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{66931}}^1$

素因数の和:67013

約数の個数: 72

約数和(自身を含む): 43212905568

約数和(自身を除く): 22807250012

約数列:

[1, 2, 4, 11, 13, 22, 26, 41, 44, 52, 82, 143, 164, 169, 286, 338, 451, 533, 572, 676, 902, 1066, 1804, 1859, 2132, 3718, 5863, 6929, 7436, 11726, 13858, 23452, 27716, 66931, 76219, 133862, 152438, 267724, 304876, 736241, 870103, 1472482, 1740206, 2744171, 2944964, 3480412, 5488342, 9571133, 10976684, 11311339, 19142266, 22622678, 30185881, 35674223, 38284532, 45245356, 60371762, 71348446, 120743524, 124424729, 142696892, 248849458, 392416453, 463764899, 497698916, 784832906, 927529798, 1569665812, 1855059596, 5101413889, 10202827778, 20405655556]

約数ペア:

[(1, 20405655556), (2, 10202827778), (4, 5101413889), (11, 1855059596), (13, 1569665812), (22, 927529798), (26, 784832906), (41, 497698916), (44, 463764899), (52, 392416453), (82, 248849458), (143, 142696892), (164, 124424729), (169, 120743524), (286, 71348446), (338, 60371762), (451, 45245356), (533, 38284532), (572, 35674223), (676, 30185881), (902, 22622678), (1066, 19142266), (1804, 11311339), (1859, 10976684), (2132, 9571133), (3718, 5488342), (5863, 3480412), (6929, 2944964), (7436, 2744171), (11726, 1740206), (13858, 1472482), (23452, 870103), (27716, 736241), (66931, 304876), (76219, 267724), (133862, 152438)]