18803995

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 28366848

約数和(自身を除く): 9562853

約数列:

[1, 5, 7, 23, 35, 47, 49, 71, 115, 161, 235, 245, 329, 355, 497, 805, 1081, 1127, 1633, 1645, 2303, 2485, 3337, 3479, 5405, 5635, 7567, 8165, 11431, 11515, 16685, 17395, 23359, 37835, 52969, 57155, 76751, 80017, 116795, 163513, 264845, 383755, 400085, 537257, 817565, 2686285, 3760799, 18803995]

約数ペア:

[(1, 18803995), (5, 3760799), (7, 2686285), (23, 817565), (35, 537257), (47, 400085), (49, 383755), (71, 264845), (115, 163513), (161, 116795), (235, 80017), (245, 76751), (329, 57155), (355, 52969), (497, 37835), (805, 23359), (1081, 17395), (1127, 16685), (1633, 11515), (1645, 11431), (2303, 8165), (2485, 7567), (3337, 5635), (3479, 5405)]