21459417

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53783}}^1$

素因数の和:53812

約数の個数: 16

約数和(自身を含む): 34421760

約数和(自身を除く): 12962343

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53783, 161349, 376481, 1021877, 1129443, 3065631, 7153139, 21459417]

約数ペア:

[(1, 21459417), (3, 7153139), (7, 3065631), (19, 1129443), (21, 1021877), (57, 376481), (133, 161349), (399, 53783)]