2111515

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:139

約数の個数: 32

約数和(自身を含む): 3142656

約数和(自身を除く): 1031141

約数列:

[1, 5, 7, 23, 35, 43, 61, 115, 161, 215, 301, 305, 427, 805, 989, 1403, 1505, 2135, 2623, 4945, 6923, 7015, 9821, 13115, 18361, 34615, 49105, 60329, 91805, 301645, 422303, 2111515]

約数ペア:

[(1, 2111515), (5, 422303), (7, 301645), (23, 91805), (35, 60329), (43, 49105), (61, 34615), (115, 18361), (161, 13115), (215, 9821), (301, 7015), (305, 6923), (427, 4945), (805, 2623), (989, 2135), (1403, 1505)]