21605103

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61553}}^1$

素因数の和:61575

約数の個数: 16

約数和(自身を含む): 34470240

約数和(自身を除く): 12865137

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 61553, 184659, 553977, 800189, 1661931, 2400567, 7201701, 21605103]

約数ペア:

[(1, 21605103), (3, 7201701), (9, 2400567), (13, 1661931), (27, 800189), (39, 553977), (117, 184659), (351, 61553)]