20504200

素因数分解:

$2^3\times 5^2\times {\mathrm{157}}^1\times {\mathrm{653}}^1$

素因数の和:826

約数の個数: 48

約数和(自身を含む): 48049380

約数和(自身を除く): 27545180

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 157, 200, 314, 628, 653, 785, 1256, 1306, 1570, 2612, 3140, 3265, 3925, 5224, 6280, 6530, 7850, 13060, 15700, 16325, 26120, 31400, 32650, 65300, 102521, 130600, 205042, 410084, 512605, 820168, 1025210, 2050420, 2563025, 4100840, 5126050, 10252100, 20504200]

約数ペア:

[(1, 20504200), (2, 10252100), (4, 5126050), (5, 4100840), (8, 2563025), (10, 2050420), (20, 1025210), (25, 820168), (40, 512605), (50, 410084), (100, 205042), (157, 130600), (200, 102521), (314, 65300), (628, 32650), (653, 31400), (785, 26120), (1256, 16325), (1306, 15700), (1570, 13060), (2612, 7850), (3140, 6530), (3265, 6280), (3925, 5224)]