21146913

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{11351}}^1$

素因数の和:11386

約数の個数: 20

約数和(自身を含む): 32966208

約数和(自身を除く): 11819295

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 11351, 34053, 102159, 261073, 306477, 783219, 919431, 2349657, 7048971, 21146913]

約数ペア:

[(1, 21146913), (3, 7048971), (9, 2349657), (23, 919431), (27, 783219), (69, 306477), (81, 261073), (207, 102159), (621, 34053), (1863, 11351)]