205644015

素因数分解:

$3^4\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1279}}^1$

素因数の和:1693

約数の個数: 40

約数和(自身を含む): 369853440

約数和(自身を除く): 164209425

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 397, 405, 1191, 1279, 1985, 3573, 3837, 5955, 6395, 10719, 11511, 17865, 19185, 32157, 34533, 53595, 57555, 103599, 160785, 172665, 507763, 517995, 1523289, 2538815, 4569867, 7616445, 13709601, 22849335, 41128803, 68548005, 205644015]

約数ペア:

[(1, 205644015), (3, 68548005), (5, 41128803), (9, 22849335), (15, 13709601), (27, 7616445), (45, 4569867), (81, 2538815), (135, 1523289), (397, 517995), (405, 507763), (1191, 172665), (1279, 160785), (1985, 103599), (3573, 57555), (3837, 53595), (5955, 34533), (6395, 32157), (10719, 19185), (11511, 17865)]