19971100

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{4871}}^1$

素因数の和:4926

約数の個数: 36

約数和(自身を含む): 44403408

約数和(自身を除く): 24432308

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 4871, 9742, 19484, 24355, 48710, 97420, 121775, 199711, 243550, 399422, 487100, 798844, 998555, 1997110, 3994220, 4992775, 9985550, 19971100]

約数ペア:

[(1, 19971100), (2, 9985550), (4, 4992775), (5, 3994220), (10, 1997110), (20, 998555), (25, 798844), (41, 487100), (50, 399422), (82, 243550), (100, 199711), (164, 121775), (205, 97420), (410, 48710), (820, 24355), (1025, 19484), (2050, 9742), (4100, 4871)]