21031772153

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1365079}}^1$

素因数の和:1365188

約数の個数: 16

約数和(自身を含む): 25161154560

約数和(自身を除く): 4129382407

約数列:

[1, 7, 31, 71, 217, 497, 2201, 15407, 1365079, 9555553, 42317449, 96920609, 296222143, 678444263, 3004538879, 21031772153]

約数ペア:

[(1, 21031772153), (7, 3004538879), (31, 678444263), (71, 296222143), (217, 96920609), (497, 42317449), (2201, 9555553), (15407, 1365079)]