128514820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{2557}}^1$

素因数の和:2932

約数の個数: 48

約数和(自身を含む): 309415680

約数和(自身を除く): 180900860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 359, 718, 1436, 1795, 2513, 2557, 3590, 5026, 5114, 7180, 10052, 10228, 12565, 12785, 17899, 25130, 25570, 35798, 50260, 51140, 71596, 89495, 178990, 357980, 917963, 1835926, 3671852, 4589815, 6425741, 9179630, 12851482, 18359260, 25702964, 32128705, 64257410, 128514820]

約数ペア:

[(1, 128514820), (2, 64257410), (4, 32128705), (5, 25702964), (7, 18359260), (10, 12851482), (14, 9179630), (20, 6425741), (28, 4589815), (35, 3671852), (70, 1835926), (140, 917963), (359, 357980), (718, 178990), (1436, 89495), (1795, 71596), (2513, 51140), (2557, 50260), (3590, 35798), (5026, 25570), (5114, 25130), (7180, 17899), (10052, 12785), (10228, 12565)]