20530005

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{521}}^1$

素因数の和:637

約数の個数: 32

約数和(自身を含む): 34276608

約数和(自身を除く): 13746603

約数列:

[1, 3, 5, 15, 37, 71, 111, 185, 213, 355, 521, 555, 1065, 1563, 2605, 2627, 7815, 7881, 13135, 19277, 36991, 39405, 57831, 96385, 110973, 184955, 289155, 554865, 1368667, 4106001, 6843335, 20530005]

約数ペア:

[(1, 20530005), (3, 6843335), (5, 4106001), (15, 1368667), (37, 554865), (71, 289155), (111, 184955), (185, 110973), (213, 96385), (355, 57831), (521, 39405), (555, 36991), (1065, 19277), (1563, 13135), (2605, 7881), (2627, 7815)]