20377400

素因数分解:

$2^3\times 5^2\times {\mathrm{139}}^1\times {\mathrm{733}}^1$

素因数の和:888

約数の個数: 48

約数和(自身を含む): 47783400

約数和(自身を除く): 27406000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 139, 200, 278, 556, 695, 733, 1112, 1390, 1466, 2780, 2932, 3475, 3665, 5560, 5864, 6950, 7330, 13900, 14660, 18325, 27800, 29320, 36650, 73300, 101887, 146600, 203774, 407548, 509435, 815096, 1018870, 2037740, 2547175, 4075480, 5094350, 10188700, 20377400]

約数ペア:

[(1, 20377400), (2, 10188700), (4, 5094350), (5, 4075480), (8, 2547175), (10, 2037740), (20, 1018870), (25, 815096), (40, 509435), (50, 407548), (100, 203774), (139, 146600), (200, 101887), (278, 73300), (556, 36650), (695, 29320), (733, 27800), (1112, 18325), (1390, 14660), (1466, 13900), (2780, 7330), (2932, 6950), (3475, 5864), (3665, 5560)]