208047140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{212293}}^1$

素因数の和:212316

約数の個数: 36

約数和(自身を含む): 508231836

約数和(自身を除く): 300184696

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 212293, 424586, 849172, 1061465, 1486051, 2122930, 2972102, 4245860, 5944204, 7430255, 10402357, 14860510, 20804714, 29721020, 41609428, 52011785, 104023570, 208047140]

約数ペア:

[(1, 208047140), (2, 104023570), (4, 52011785), (5, 41609428), (7, 29721020), (10, 20804714), (14, 14860510), (20, 10402357), (28, 7430255), (35, 5944204), (49, 4245860), (70, 2972102), (98, 2122930), (140, 1486051), (196, 1061465), (245, 849172), (490, 424586), (980, 212293)]