21147754

素因数分解:

$2^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1\times {\mathrm{409}}^1$

素因数の和:765

約数の個数: 16

約数和(自身を含む): 32235840

約数和(自身を除く): 11088086

約数列:

[1, 2, 103, 206, 251, 409, 502, 818, 25853, 42127, 51706, 84254, 102659, 205318, 10573877, 21147754]

約数ペア:

[(1, 21147754), (2, 10573877), (103, 205318), (206, 102659), (251, 84254), (409, 51706), (502, 42127), (818, 25853)]