21471465

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20161}}^1$

素因数の和:20240

約数の個数: 16

約数和(自身を含む): 34839936

約数和(自身を除く): 13368471

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 20161, 60483, 100805, 302415, 1431431, 4294293, 7157155, 21471465]

約数ペア:

[(1, 21471465), (3, 7157155), (5, 4294293), (15, 1431431), (71, 302415), (213, 100805), (355, 60483), (1065, 20161)]