18620355

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:216

約数の個数: 64

約数和(自身を含む): 35054208

約数和(自身を除く): 16433853

約数列:

[1, 3, 5, 13, 15, 17, 39, 41, 51, 65, 85, 123, 137, 195, 205, 221, 255, 411, 533, 615, 663, 685, 697, 1105, 1599, 1781, 2055, 2091, 2329, 2665, 3315, 3485, 5343, 5617, 6987, 7995, 8905, 9061, 10455, 11645, 16851, 26715, 27183, 28085, 30277, 34935, 45305, 73021, 84255, 90831, 95489, 135915, 151385, 219063, 286467, 365105, 454155, 477445, 1095315, 1241357, 1432335, 3724071, 6206785, 18620355]

約数ペア:

[(1, 18620355), (3, 6206785), (5, 3724071), (13, 1432335), (15, 1241357), (17, 1095315), (39, 477445), (41, 454155), (51, 365105), (65, 286467), (85, 219063), (123, 151385), (137, 135915), (195, 95489), (205, 90831), (221, 84255), (255, 73021), (411, 45305), (533, 34935), (615, 30277), (663, 28085), (685, 27183), (697, 26715), (1105, 16851), (1599, 11645), (1781, 10455), (2055, 9061), (2091, 8905), (2329, 7995), (2665, 6987), (3315, 5617), (3485, 5343)]