20856810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53479}}^1$

素因数の和:53502

約数の個数: 32

約数和(自身を含む): 53907840

約数和(自身を除く): 33051030

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53479, 106958, 160437, 267395, 320874, 534790, 695227, 802185, 1390454, 1604370, 2085681, 3476135, 4171362, 6952270, 10428405, 20856810]

約数ペア:

[(1, 20856810), (2, 10428405), (3, 6952270), (5, 4171362), (6, 3476135), (10, 2085681), (13, 1604370), (15, 1390454), (26, 802185), (30, 695227), (39, 534790), (65, 320874), (78, 267395), (130, 160437), (195, 106958), (390, 53479)]