21060417

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{52783}}^1$

素因数の和:52812

約数の個数: 16

約数和(自身を含む): 33781760

約数和(自身を除く): 12721343

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 52783, 158349, 369481, 1002877, 1108443, 3008631, 7020139, 21060417]

約数ペア:

[(1, 21060417), (3, 7020139), (7, 3008631), (19, 1108443), (21, 1002877), (57, 369481), (133, 158349), (399, 52783)]