21808203

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{439}}^1\times {\mathrm{571}}^1$

素因数の和:1042

約数の個数: 16

約数和(自身を含む): 30201600

約数和(自身を除く): 8393397

約数列:

[1, 3, 29, 87, 439, 571, 1317, 1713, 12731, 16559, 38193, 49677, 250669, 752007, 7269401, 21808203]

約数ペア:

[(1, 21808203), (3, 7269401), (29, 752007), (87, 250669), (439, 49677), (571, 38193), (1317, 16559), (1713, 12731)]