2831980

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 6320160

約数和(自身を除く): 3488180

約数列:

[1, 2, 4, 5, 10, 20, 37, 43, 74, 86, 89, 148, 172, 178, 185, 215, 356, 370, 430, 445, 740, 860, 890, 1591, 1780, 3182, 3293, 3827, 6364, 6586, 7654, 7955, 13172, 15308, 15910, 16465, 19135, 31820, 32930, 38270, 65860, 76540, 141599, 283198, 566396, 707995, 1415990, 2831980]

約数ペア:

[(1, 2831980), (2, 1415990), (4, 707995), (5, 566396), (10, 283198), (20, 141599), (37, 76540), (43, 65860), (74, 38270), (86, 32930), (89, 31820), (148, 19135), (172, 16465), (178, 15910), (185, 15308), (215, 13172), (356, 7955), (370, 7654), (430, 6586), (445, 6364), (740, 3827), (860, 3293), (890, 3182), (1591, 1780)]