209440840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{748003}}^1$

素因数の和:748021

約数の個数: 32

約数和(自身を含む): 538562880

約数和(自身を除く): 329122040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 748003, 1496006, 2992012, 3740015, 5236021, 5984024, 7480030, 10472042, 14960060, 20944084, 26180105, 29920120, 41888168, 52360210, 104720420, 209440840]

約数ペア:

[(1, 209440840), (2, 104720420), (4, 52360210), (5, 41888168), (7, 29920120), (8, 26180105), (10, 20944084), (14, 14960060), (20, 10472042), (28, 7480030), (35, 5984024), (40, 5236021), (56, 3740015), (70, 2992012), (140, 1496006), (280, 748003)]