20728575

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:174

約数の個数: 96

約数和(自身を含む): 44997120

約数和(自身を除く): 24268545

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 41, 45, 63, 75, 105, 107, 123, 135, 175, 189, 205, 225, 287, 315, 321, 369, 525, 535, 615, 675, 749, 861, 945, 963, 1025, 1107, 1435, 1575, 1605, 1845, 2247, 2583, 2675, 2889, 3075, 3745, 4305, 4387, 4725, 4815, 5535, 6741, 7175, 7749, 8025, 9225, 11235, 12915, 13161, 14445, 18725, 20223, 21525, 21935, 24075, 27675, 30709, 33705, 38745, 39483, 56175, 64575, 65805, 72225, 92127, 101115, 109675, 118449, 153545, 168525, 193725, 197415, 276381, 329025, 460635, 505575, 592245, 767725, 829143, 987075, 1381905, 2303175, 2961225, 4145715, 6909525, 20728575]

約数ペア:

[(1, 20728575), (3, 6909525), (5, 4145715), (7, 2961225), (9, 2303175), (15, 1381905), (21, 987075), (25, 829143), (27, 767725), (35, 592245), (41, 505575), (45, 460635), (63, 329025), (75, 276381), (105, 197415), (107, 193725), (123, 168525), (135, 153545), (175, 118449), (189, 109675), (205, 101115), (225, 92127), (287, 72225), (315, 65805), (321, 64575), (369, 56175), (525, 39483), (535, 38745), (615, 33705), (675, 30709), (749, 27675), (861, 24075), (945, 21935), (963, 21525), (1025, 20223), (1107, 18725), (1435, 14445), (1575, 13161), (1605, 12915), (1845, 11235), (2247, 9225), (2583, 8025), (2675, 7749), (2889, 7175), (3075, 6741), (3745, 5535), (4305, 4815), (4387, 4725)]