21319539

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{2477}}^1$

素因数の和:2650

約数の個数: 16

約数和(自身を含む): 30132480

約数和(自身を除く): 8812941

約数列:

[1, 3, 19, 57, 151, 453, 2477, 2869, 7431, 8607, 47063, 141189, 374027, 1122081, 7106513, 21319539]

約数ペア:

[(1, 21319539), (3, 7106513), (19, 1122081), (57, 374027), (151, 141189), (453, 47063), (2477, 8607), (2869, 7431)]