28008855

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{277}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 57646080

約数和(自身を除く): 29637225

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 107, 135, 189, 277, 315, 321, 535, 749, 831, 945, 963, 1385, 1605, 1939, 2247, 2493, 2889, 3745, 4155, 4815, 5817, 6741, 7479, 9695, 11235, 12465, 14445, 17451, 20223, 29085, 29639, 33705, 37395, 52353, 87255, 88917, 101115, 148195, 207473, 261765, 266751, 444585, 622419, 800253, 1037365, 1333755, 1867257, 3112095, 4001265, 5601771, 9336285, 28008855]

約数ペア:

[(1, 28008855), (3, 9336285), (5, 5601771), (7, 4001265), (9, 3112095), (15, 1867257), (21, 1333755), (27, 1037365), (35, 800253), (45, 622419), (63, 444585), (105, 266751), (107, 261765), (135, 207473), (189, 148195), (277, 101115), (315, 88917), (321, 87255), (535, 52353), (749, 37395), (831, 33705), (945, 29639), (963, 29085), (1385, 20223), (1605, 17451), (1939, 14445), (2247, 12465), (2493, 11235), (2889, 9695), (3745, 7479), (4155, 6741), (4815, 5817)]