679400

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:138

約数の個数: 48

約数和(自身を含む): 1636800

約数和(自身を除く): 957400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 79, 86, 100, 158, 172, 200, 215, 316, 344, 395, 430, 632, 790, 860, 1075, 1580, 1720, 1975, 2150, 3160, 3397, 3950, 4300, 6794, 7900, 8600, 13588, 15800, 16985, 27176, 33970, 67940, 84925, 135880, 169850, 339700, 679400]

約数ペア:

[(1, 679400), (2, 339700), (4, 169850), (5, 135880), (8, 84925), (10, 67940), (20, 33970), (25, 27176), (40, 16985), (43, 15800), (50, 13588), (79, 8600), (86, 7900), (100, 6794), (158, 4300), (172, 3950), (200, 3397), (215, 3160), (316, 2150), (344, 1975), (395, 1720), (430, 1580), (632, 1075), (790, 860)]