207980865

素因数分解:

$3^4\times 5^1\times {\mathrm{513533}}^1$

素因数の和:513550

約数の個数: 20

約数和(自身を含む): 372825684

約数和(自身を除く): 164844819

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 513533, 1540599, 2567665, 4621797, 7702995, 13865391, 23108985, 41596173, 69326955, 207980865]

約数ペア:

[(1, 207980865), (3, 69326955), (5, 41596173), (9, 23108985), (15, 13865391), (27, 7702995), (45, 4621797), (81, 2567665), (135, 1540599), (405, 513533)]