21031619

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{683}}^1$

素因数の和:826

約数の個数: 16

約数和(自身を含む): 24820992

約数和(自身を除く): 3789373

約数列:

[1, 7, 53, 83, 371, 581, 683, 4399, 4781, 30793, 36199, 56689, 253393, 396823, 3004517, 21031619]

約数ペア:

[(1, 21031619), (7, 3004517), (53, 396823), (83, 253393), (371, 56689), (581, 36199), (683, 30793), (4399, 4781)]