28215400

素因数分解:

$2^3\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1987}}^1$

素因数の和:2074

約数の個数: 48

約数和(自身を含む): 66558240

約数和(自身を除く): 38342840

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 142, 200, 284, 355, 568, 710, 1420, 1775, 1987, 2840, 3550, 3974, 7100, 7948, 9935, 14200, 15896, 19870, 39740, 49675, 79480, 99350, 141077, 198700, 282154, 397400, 564308, 705385, 1128616, 1410770, 2821540, 3526925, 5643080, 7053850, 14107700, 28215400]

約数ペア:

[(1, 28215400), (2, 14107700), (4, 7053850), (5, 5643080), (8, 3526925), (10, 2821540), (20, 1410770), (25, 1128616), (40, 705385), (50, 564308), (71, 397400), (100, 282154), (142, 198700), (200, 141077), (284, 99350), (355, 79480), (568, 49675), (710, 39740), (1420, 19870), (1775, 15896), (1987, 14200), (2840, 9935), (3550, 7948), (3974, 7100)]