80185520

素因数分解:

$2^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{4159}}^1$

素因数の和:4413

約数の個数: 40

約数和(自身を含む): 187249920

約数和(自身を除く): 107064400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 241, 482, 964, 1205, 1928, 2410, 3856, 4159, 4820, 8318, 9640, 16636, 19280, 20795, 33272, 41590, 66544, 83180, 166360, 332720, 1002319, 2004638, 4009276, 5011595, 8018552, 10023190, 16037104, 20046380, 40092760, 80185520]

約数ペア:

[(1, 80185520), (2, 40092760), (4, 20046380), (5, 16037104), (8, 10023190), (10, 8018552), (16, 5011595), (20, 4009276), (40, 2004638), (80, 1002319), (241, 332720), (482, 166360), (964, 83180), (1205, 66544), (1928, 41590), (2410, 33272), (3856, 20795), (4159, 19280), (4820, 16636), (8318, 9640)]