21011847

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{6983}}^1$

素因数の和:7062

約数の個数: 16

約数和(自身を含む): 30170880

約数和(自身を除く): 9159033

約数列:

[1, 3, 17, 51, 59, 177, 1003, 3009, 6983, 20949, 118711, 356133, 411997, 1235991, 7003949, 21011847]

約数ペア:

[(1, 21011847), (3, 7003949), (17, 1235991), (51, 411997), (59, 356133), (177, 118711), (1003, 20949), (3009, 6983)]