21277473

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53327}}^1$

素因数の和:53356

約数の個数: 16

約数和(自身を含む): 34129920

約数和(自身を除く): 12852447

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53327, 159981, 373289, 1013213, 1119867, 3039639, 7092491, 21277473]

約数ペア:

[(1, 21277473), (3, 7092491), (7, 3039639), (19, 1119867), (21, 1013213), (57, 373289), (133, 159981), (399, 53327)]