205391285

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{353}}^1$

素因数の和:589

約数の個数: 32

約数和(自身を含む): 275270400

約数和(自身を除く): 69879115

約数列:

[1, 5, 11, 55, 71, 149, 353, 355, 745, 781, 1639, 1765, 3883, 3905, 8195, 10579, 19415, 25063, 52597, 52895, 116369, 125315, 262985, 275693, 578567, 581845, 1378465, 2892835, 3734387, 18671935, 41078257, 205391285]

約数ペア:

[(1, 205391285), (5, 41078257), (11, 18671935), (55, 3734387), (71, 2892835), (149, 1378465), (353, 581845), (355, 578567), (745, 275693), (781, 262985), (1639, 125315), (1765, 116369), (3883, 52895), (3905, 52597), (8195, 25063), (10579, 19415)]