19434820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{173}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 42357168

約数和(自身を除く): 22922348

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 137, 164, 173, 205, 274, 346, 410, 548, 685, 692, 820, 865, 1370, 1730, 2740, 3460, 5617, 7093, 11234, 14186, 22468, 23701, 28085, 28372, 35465, 47402, 56170, 70930, 94804, 112340, 118505, 141860, 237010, 474020, 971741, 1943482, 3886964, 4858705, 9717410, 19434820]

約数ペア:

[(1, 19434820), (2, 9717410), (4, 4858705), (5, 3886964), (10, 1943482), (20, 971741), (41, 474020), (82, 237010), (137, 141860), (164, 118505), (173, 112340), (205, 94804), (274, 70930), (346, 56170), (410, 47402), (548, 35465), (685, 28372), (692, 28085), (820, 23701), (865, 22468), (1370, 14186), (1730, 11234), (2740, 7093), (3460, 5617)]