21153213

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{1201}}^1$

素因数の和:1329

約数の個数: 24

約数和(自身を含む): 32502080

約数和(自身を除く): 11348867

約数列:

[1, 3, 9, 19, 57, 103, 171, 309, 927, 1201, 1957, 3603, 5871, 10809, 17613, 22819, 68457, 123703, 205371, 371109, 1113327, 2350357, 7051071, 21153213]

約数ペア:

[(1, 21153213), (3, 7051071), (9, 2350357), (19, 1113327), (57, 371109), (103, 205371), (171, 123703), (309, 68457), (927, 22819), (1201, 17613), (1957, 10809), (3603, 5871)]