78157880

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{5023}}^1$

素因数の和:5423

約数の個数: 32

約数和(自身を含む): 176342400

約数和(自身を除く): 98184520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 5023, 7780, 10046, 15560, 20092, 25115, 40184, 50230, 100460, 200920, 1953947, 3907894, 7815788, 9769735, 15631576, 19539470, 39078940, 78157880]

約数ペア:

[(1, 78157880), (2, 39078940), (4, 19539470), (5, 15631576), (8, 9769735), (10, 7815788), (20, 3907894), (40, 1953947), (389, 200920), (778, 100460), (1556, 50230), (1945, 40184), (3112, 25115), (3890, 20092), (5023, 15560), (7780, 10046)]