21140655

素因数分解:

$3^1\times 5^1\times {\mathrm{1031}}^1\times {\mathrm{1367}}^1$

素因数の和:2406

約数の個数: 16

約数和(自身を含む): 33882624

約数和(自身を除く): 12741969

約数列:

[1, 3, 5, 15, 1031, 1367, 3093, 4101, 5155, 6835, 15465, 20505, 1409377, 4228131, 7046885, 21140655]

約数ペア:

[(1, 21140655), (3, 7046885), (5, 4228131), (15, 1409377), (1031, 20505), (1367, 15465), (3093, 6835), (4101, 5155)]