20080928

素因数分解:

$2^5\times 7^1\times {\mathrm{157}}^1\times {\mathrm{571}}^1$

素因数の和:745

約数の個数: 48

約数和(自身を含む): 45549504

約数和(自身を除く): 25468576

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 157, 224, 314, 571, 628, 1099, 1142, 1256, 2198, 2284, 2512, 3997, 4396, 4568, 5024, 7994, 8792, 9136, 15988, 17584, 18272, 31976, 35168, 63952, 89647, 127904, 179294, 358588, 627529, 717176, 1255058, 1434352, 2510116, 2868704, 5020232, 10040464, 20080928]

約数ペア:

[(1, 20080928), (2, 10040464), (4, 5020232), (7, 2868704), (8, 2510116), (14, 1434352), (16, 1255058), (28, 717176), (32, 627529), (56, 358588), (112, 179294), (157, 127904), (224, 89647), (314, 63952), (571, 35168), (628, 31976), (1099, 18272), (1142, 17584), (1256, 15988), (2198, 9136), (2284, 8792), (2512, 7994), (3997, 5024), (4396, 4568)]