18680455840

素因数分解:

$2^5\times 5^1\times {\mathrm{911}}^1\times {\mathrm{128159}}^1$

素因数の和:129085

約数の個数: 48

約数和(自身を含む): 44181365760

約数和(自身を除く): 25500909920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 911, 1822, 3644, 4555, 7288, 9110, 14576, 18220, 29152, 36440, 72880, 128159, 145760, 256318, 512636, 640795, 1025272, 1281590, 2050544, 2563180, 4101088, 5126360, 10252720, 20505440, 116752849, 233505698, 467011396, 583764245, 934022792, 1167528490, 1868045584, 2335056980, 3736091168, 4670113960, 9340227920, 18680455840]

約数ペア:

[(1, 18680455840), (2, 9340227920), (4, 4670113960), (5, 3736091168), (8, 2335056980), (10, 1868045584), (16, 1167528490), (20, 934022792), (32, 583764245), (40, 467011396), (80, 233505698), (160, 116752849), (911, 20505440), (1822, 10252720), (3644, 5126360), (4555, 4101088), (7288, 2563180), (9110, 2050544), (14576, 1281590), (18220, 1025272), (29152, 640795), (36440, 512636), (72880, 256318), (128159, 145760)]