31820920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19403}}^1$

素因数の和:19455

約数の個数: 32

約数和(自身を含む): 73347120

約数和(自身を除く): 41526200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 19403, 38806, 77612, 97015, 155224, 194030, 388060, 776120, 795523, 1591046, 3182092, 3977615, 6364184, 7955230, 15910460, 31820920]

約数ペア:

[(1, 31820920), (2, 15910460), (4, 7955230), (5, 6364184), (8, 3977615), (10, 3182092), (20, 1591046), (40, 795523), (41, 776120), (82, 388060), (164, 194030), (205, 155224), (328, 97015), (410, 77612), (820, 38806), (1640, 19403)]