219319945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{691}}^1$

素因数の和:985

約数の個数: 32

約数和(自身を含む): 299940480

約数和(自身を除く): 80620535

約数列:

[1, 5, 13, 19, 65, 95, 247, 257, 691, 1235, 1285, 3341, 3455, 4883, 8983, 13129, 16705, 24415, 44915, 63479, 65645, 170677, 177587, 317395, 853385, 887935, 2308631, 3374153, 11543155, 16870765, 43863989, 219319945]

約数ペア:

[(1, 219319945), (5, 43863989), (13, 16870765), (19, 11543155), (65, 3374153), (95, 2308631), (247, 887935), (257, 853385), (691, 317395), (1235, 177587), (1285, 170677), (3341, 65645), (3455, 63479), (4883, 44915), (8983, 24415), (13129, 16705)]