21129227

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{887}}^1$

素因数の和:1018

約数の個数: 16

約数和(自身を含む): 25062912

約数和(自身を除く): 3933685

約数列:

[1, 7, 41, 83, 287, 581, 887, 3403, 6209, 23821, 36367, 73621, 254569, 515347, 3018461, 21129227]

約数ペア:

[(1, 21129227), (7, 3018461), (41, 515347), (83, 254569), (287, 73621), (581, 36367), (887, 23821), (3403, 6209)]