18440865

素因数分解:

$3^4\times 5^1\times {\mathrm{45533}}^1$

素因数の和:45550

約数の個数: 20

約数和(自身を含む): 33057684

約数和(自身を除く): 14616819

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 45533, 136599, 227665, 409797, 682995, 1229391, 2048985, 3688173, 6146955, 18440865]

約数ペア:

[(1, 18440865), (3, 6146955), (5, 3688173), (9, 2048985), (15, 1229391), (27, 682995), (45, 409797), (81, 227665), (135, 136599), (405, 45533)]