2784680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1619}}^1$

素因数の和:1673

約数の個数: 32

約数和(自身を含む): 6415200

約数和(自身を除く): 3630520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1619, 1720, 3238, 6476, 8095, 12952, 16190, 32380, 64760, 69617, 139234, 278468, 348085, 556936, 696170, 1392340, 2784680]

約数ペア:

[(1, 2784680), (2, 1392340), (4, 696170), (5, 556936), (8, 348085), (10, 278468), (20, 139234), (40, 69617), (43, 64760), (86, 32380), (172, 16190), (215, 12952), (344, 8095), (430, 6476), (860, 3238), (1619, 1720)]