20905340

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{15601}}^1$

素因数の和:15677

約数の個数: 24

約数和(自身を含む): 44559312

約数和(自身を除く): 23653972

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 15601, 31202, 62404, 78005, 156010, 312020, 1045267, 2090534, 4181068, 5226335, 10452670, 20905340]

約数ペア:

[(1, 20905340), (2, 10452670), (4, 5226335), (5, 4181068), (10, 2090534), (20, 1045267), (67, 312020), (134, 156010), (268, 78005), (335, 62404), (670, 31202), (1340, 15601)]