20765430

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{10987}}^1$

素因数の和:11010

約数の個数: 64

約数和(自身を含む): 63290880

約数和(自身を除く): 42525450

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 10987, 21974, 32961, 54935, 65922, 76909, 98883, 109870, 153818, 164805, 197766, 230727, 296649, 329610, 384545, 461454, 494415, 593298, 692181, 769090, 988830, 1153635, 1384362, 1483245, 2076543, 2307270, 2966490, 3460905, 4153086, 6921810, 10382715, 20765430]

約数ペア:

[(1, 20765430), (2, 10382715), (3, 6921810), (5, 4153086), (6, 3460905), (7, 2966490), (9, 2307270), (10, 2076543), (14, 1483245), (15, 1384362), (18, 1153635), (21, 988830), (27, 769090), (30, 692181), (35, 593298), (42, 494415), (45, 461454), (54, 384545), (63, 329610), (70, 296649), (90, 230727), (105, 197766), (126, 164805), (135, 153818), (189, 109870), (210, 98883), (270, 76909), (315, 65922), (378, 54935), (630, 32961), (945, 21974), (1890, 10987)]