65207920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47947}}^1$

素因数の和:47977

約数の個数: 40

約数和(自身を含む): 160529904

約数和(自身を除く): 95321984

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 47947, 95894, 191788, 239735, 383576, 479470, 767152, 815099, 958940, 1630198, 1917880, 3260396, 3835760, 4075495, 6520792, 8150990, 13041584, 16301980, 32603960, 65207920]

約数ペア:

[(1, 65207920), (2, 32603960), (4, 16301980), (5, 13041584), (8, 8150990), (10, 6520792), (16, 4075495), (17, 3835760), (20, 3260396), (34, 1917880), (40, 1630198), (68, 958940), (80, 815099), (85, 767152), (136, 479470), (170, 383576), (272, 239735), (340, 191788), (680, 95894), (1360, 47947)]