20709591

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{809}}^1$

素因数の和:895

約数の個数: 32

約数和(自身を含む): 33592320

約数和(自身を除く): 12882729

約数列:

[1, 3, 7, 21, 23, 53, 69, 159, 161, 371, 483, 809, 1113, 1219, 2427, 3657, 5663, 8533, 16989, 18607, 25599, 42877, 55821, 128631, 130249, 300139, 390747, 900417, 986171, 2958513, 6903197, 20709591]

約数ペア:

[(1, 20709591), (3, 6903197), (7, 2958513), (21, 986171), (23, 900417), (53, 390747), (69, 300139), (159, 130249), (161, 128631), (371, 55821), (483, 42877), (809, 25599), (1113, 18607), (1219, 16989), (2427, 8533), (3657, 5663)]