1987685

素因数分解:

$5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:106

約数の個数: 32

約数和(自身を含む): 2976000

約数和(自身を除く): 988315

約数列:

[1, 5, 7, 19, 35, 49, 61, 95, 133, 245, 305, 343, 427, 665, 931, 1159, 1715, 2135, 2989, 4655, 5795, 6517, 8113, 14945, 20923, 32585, 40565, 56791, 104615, 283955, 397537, 1987685]

約数ペア:

[(1, 1987685), (5, 397537), (7, 283955), (19, 104615), (35, 56791), (49, 40565), (61, 32585), (95, 20923), (133, 14945), (245, 8113), (305, 6517), (343, 5795), (427, 4655), (665, 2989), (931, 2135), (1159, 1715)]