21015057

素因数分解:

$3^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{2377}}^1$

素因数の和:2808

約数の個数: 16

約数和(自身を含む): 32112512

約数和(自身を除く): 11097455

約数列:

[1, 3, 7, 21, 421, 1263, 2377, 2947, 7131, 8841, 16639, 49917, 1000717, 3002151, 7005019, 21015057]

約数ペア:

[(1, 21015057), (3, 7005019), (7, 3002151), (21, 1000717), (421, 49917), (1263, 16639), (2377, 8841), (2947, 7131)]