18400345

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^2$

素因数の和:193

約数の個数: 24

約数和(自身を含む): 23969088

約数和(自身を除く): 5568743

約数列:

[1, 5, 23, 43, 61, 115, 215, 305, 989, 1403, 2623, 3721, 4945, 7015, 13115, 18605, 60329, 85583, 160003, 301645, 427915, 800015, 3680069, 18400345]

約数ペア:

[(1, 18400345), (5, 3680069), (23, 800015), (43, 427915), (61, 301645), (115, 160003), (215, 85583), (305, 60329), (989, 18605), (1403, 13115), (2623, 7015), (3721, 4945)]