123403720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{280463}}^1$

素因数の和:280485

約数の個数: 32

約数和(自身を含む): 302901120

約数和(自身を除く): 179497400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 280463, 560926, 1121852, 1402315, 2243704, 2804630, 3085093, 5609260, 6170186, 11218520, 12340372, 15425465, 24680744, 30850930, 61701860, 123403720]

約数ペア:

[(1, 123403720), (2, 61701860), (4, 30850930), (5, 24680744), (8, 15425465), (10, 12340372), (11, 11218520), (20, 6170186), (22, 5609260), (40, 3085093), (44, 2804630), (55, 2243704), (88, 1402315), (110, 1121852), (220, 560926), (440, 280463)]