1277980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 3026016

約数和(自身を除く): 1748036

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 157, 185, 220, 314, 370, 407, 628, 740, 785, 814, 1570, 1628, 1727, 2035, 3140, 3454, 4070, 5809, 6908, 8140, 8635, 11618, 17270, 23236, 29045, 34540, 58090, 63899, 116180, 127798, 255596, 319495, 638990, 1277980]

約数ペア:

[(1, 1277980), (2, 638990), (4, 319495), (5, 255596), (10, 127798), (11, 116180), (20, 63899), (22, 58090), (37, 34540), (44, 29045), (55, 23236), (74, 17270), (110, 11618), (148, 8635), (157, 8140), (185, 6908), (220, 5809), (314, 4070), (370, 3454), (407, 3140), (628, 2035), (740, 1727), (785, 1628), (814, 1570)]